DOC: Update setup-micromamba action to v2 for improved stability and functionality

Author: sanchit122006

.github/actions/setup-conda/action.yml

@@ -1,23 +1,27 @@
 name: Set up Conda environment
+
 inputs:
   environment-file:
     description: Conda environment file to use.
     default: environment.yml
+
 runs:
   using: composite
   steps:
     - name: Install ${{ inputs.environment-file }}
-      uses: mamba-org/setup-micromamba@v1 # Changed from @v2 to @v1 for stability
+      uses: mamba-org/setup-micromamba@v2
       with:
         micromamba-url: https://github.com/mamba-org/micromamba-releases/releases/latest/download/micromamba-linux-64
         environment-file: ${{ inputs.environment-file }}
         environment-name: test
         condarc-file: ci/.condarc
         cache-environment: true
         cache-downloads: true
+        # avoid aggressive post-cleanup that can trigger JSON issues
+        post-cleanup: none
 
     - name: Uninstall pyarrow
       if: ${{ env.REMOVE_PYARROW == '1' }}
+      shell: bash -el {0}
       run: |
-        micromamba remove -y pyarrow
-      shell: bash -el {0}
+        micromamba remove -y -n test pyarrow