ci(deps): bump actions/checkout from 4 to 6

.github/workflows/amber-auto-review.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout PR head
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.ref }}

.github/workflows/amber-dependency-sync.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: main
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/amber-issue-handler.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/claude-code-review.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout PR head
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.ref }}

.github/workflows/claude.yml

@@ -38,7 +38,7 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Checkout repository (fork-compatible)
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: ${{ github.event.issue.pull_request && steps.pr-info.outputs.is_fork == 'true' && format('{0}/{1}', steps.pr-info.outputs.pr_head_owner, steps.pr-info.outputs.pr_head_repo) || github.repository }}
           ref: ${{ github.event.issue.pull_request && steps.pr-info.outputs.pr_head_ref || github.ref }}

.github/workflows/components-build-deploy.yml

@@ -35,7 +35,7 @@ jobs:
       claude-runner: ${{ steps.filter.outputs.claude-runner }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
 
@@ -87,7 +87,7 @@ jobs:
     steps:
       - name: Checkout code
         if: matrix.component.changed == 'true' || github.event_name == 'workflow_dispatch'
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha || github.sha }}
 
@@ -146,7 +146,7 @@ jobs:
     if: (github.event_name == 'push' && github.ref == 'refs/heads/main') || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install oc
         uses: redhat-actions/oc-installer@v1
@@ -169,7 +169,7 @@ jobs:
     if: github.event_name == 'push' && github.ref == 'refs/heads/main' && (needs.detect-changes.outputs.frontend == 'true' || needs.detect-changes.outputs.backend == 'true' || needs.detect-changes.outputs.operator == 'true' || needs.detect-changes.outputs.claude-runner == 'true')
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install oc
         uses: redhat-actions/oc-installer@v1
@@ -253,7 +253,7 @@ jobs:
     if: github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install oc
         uses: redhat-actions/oc-installer@v1

.github/workflows/docs.yml

@@ -26,7 +26,7 @@ jobs:
           microdnf install -y git tar
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Python and dependencies
         run: |

.github/workflows/e2e.yml

@@ -36,7 +36,7 @@ jobs:
       claude-runner: ${{ steps.filter.outputs.claude-runner }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check for component changes
         uses: dorny/paths-filter@v3
@@ -60,7 +60,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Validate AGENTS.md symlink
       run: |

.github/workflows/frontend-lint.yml

@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Node.js
         uses: actions/setup-node@v6

.github/workflows/go-lint.yml

@@ -35,7 +35,7 @@ jobs:
       operator: ${{ steps.filter.outputs.operator }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check for Go changes
         uses: dorny/paths-filter@v3
@@ -57,7 +57,7 @@ jobs:
     if: needs.detect-go-changes.outputs.backend == 'true' || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6
@@ -95,7 +95,7 @@ jobs:
     if: needs.detect-go-changes.outputs.operator == 'true' || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6

.github/workflows/makefile-quality.yml

@@ -82,7 +82,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install shellcheck
       run: |

.github/workflows/prod-release-deploy.yaml

@@ -21,7 +21,7 @@ jobs:
       new_tag: ${{ steps.next_version.outputs.new_tag }}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0  # Fetch all history for changelog generation
 
@@ -160,7 +160,7 @@ jobs:
             dockerfile: ./components/runners/claude-code-runner/Dockerfile
     steps:
       - name: Checkout code from the tag generated above
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
             ref: ${{ needs.release.outputs.new_tag }}
             fetch-depth: 0
@@ -203,7 +203,7 @@ jobs:
     needs: [release, build-and-push]
     steps:
       - name: Checkout code from release tag
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ needs.release.outputs.new_tag }}
 

.github/workflows/runner-tests.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6

.github/workflows/test-agents-md-symlink.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Validate AGENTS.md symlink
       run: |

.github/workflows/test-local-dev.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install minikube and kubectl
       run: |