add concurrency for PRs

Author: ndonkoHenri

.github/workflows/build.yml

@@ -16,6 +16,12 @@ on:
       - 'LICENSE'
       - 'README.md'
 
+concurrency:
+  # PRs share a group (PR number) → newer PR runs cancel older ones.
+  # Push/dispatch runs use unique run_id → nothing gets cancelled.
+  group: build-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 env:
   UV_PYTHON: 3.12
   PYTHONUTF8: 1
@@ -246,11 +252,14 @@ jobs:
   dependabot:
     name: 'Dependabot'
     # needs: [build-aab, build-apk, build-ipa, build-linux, build-macos, build-web, build-windows]
-    needs: [build-web]
+    #needs: []
     runs-on: ubuntu-latest
     if: ${{ github.actor == 'dependabot[bot]' && github.event_name == 'pull_request'}}
+    permissions:
+      contents: read
+      pull-requests: write
     steps:
-      - name: Enable auto-merge for Dependabot PRs
+      - name: Merge Dependabot PR
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}