ci: custom commit flow

Author: simon-the-shark

.github/workflows/release-please.yaml

@@ -51,12 +51,17 @@ jobs:
           dart run build_runner build --delete-conflicting-outputs
 
       - name: Commit and push changes (build runner)
-        uses: devops-infra/action-commit-push@master
         if: ${{ steps.release.outputs.prs_created == 'true' }}
-        with:
-          github_token: "${{ steps.generate-token.outputs.token }}"
-          add_timestamp: false
-          commit_prefix: "chore: "
-          commit_message: "run build_runner build"
-          force: false
-          target_branch: ${{ fromJSON(steps.release.outputs.pr).headBranchName }}
+        env:
+          TARGET_BRANCH: ${{ fromJSON(steps.release.outputs.pr).headBranchName }}
+        run: |
+          if [ -z "$(git status --porcelain)" ]; then
+            echo "No build_runner changes to commit."
+            exit 0
+          fi
+
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add .
+          git commit -m "chore: run build_runner build"
+          git push origin "HEAD:${TARGET_BRANCH}"