Single PR at the time

Author: Borda

.github/dependabot.yml

@@ -17,7 +17,7 @@ updates:
     # Labels on pull requests for version updates only
     labels: ["maintenance"]
     # Allow up to N open pull requests for pip dependencies
-    open-pull-requests-limit: 3
+    open-pull-requests-limit: 1
 
   # Enable version updates for GitHub Actions
   - package-ecosystem: "github-actions"
@@ -32,4 +32,4 @@ updates:
     # Labels on pull requests for version updates only
     labels: ["maintenance"]
     # Allow up to N open pull requests for GitHub Actions
-    open-pull-requests-limit: 3
+    open-pull-requests-limit: 1