Merge pull request #3284 from github/mbg/ci/fix-enterprise-workflow

Fix `update-supported-enterprise-server-versions.yml` workflow

.github/workflows/update-supported-enterprise-server-versions.yml

@@ -4,6 +4,12 @@ on:
   schedule:
     - cron: "0 0 * * *"
   workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - .github/workflows/update-supported-enterprise-server-versions.yml
+      - .github/workflows/update-supported-enterprise-server-versions/update.py
 
 jobs:
   update-supported-enterprise-server-versions:
@@ -28,6 +34,7 @@ jobs:
           repository: github/enterprise-releases
           token: ${{ secrets.ENTERPRISE_RELEASE_TOKEN }}
           path: ${{ github.workspace }}/enterprise-releases/
+          sparse-checkout: releases.json
       - name: Update Supported Enterprise Server Versions
         run: |
           cd ./.github/workflows/update-supported-enterprise-server-versions/
@@ -35,6 +42,7 @@ jobs:
           pipenv install
           pipenv run ./update.py
           rm --recursive "$ENTERPRISE_RELEASES_PATH"
+          npm ci
           npm run build
         env:
           ENTERPRISE_RELEASES_PATH: ${{ github.workspace }}/enterprise-releases/
@@ -44,25 +52,33 @@ jobs:
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config --global user.name "github-actions[bot]"
 
-      - name: Commit changes and open PR
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Commit changes
+        id: prepare-commit
         run: |
           if [[ -z $(git status --porcelain) ]]; then
             echo "No changes to commit"
+            echo "committed=false" >> $GITHUB_OUTPUT
           else
             git checkout -b update-supported-enterprise-server-versions
             git add .
             git commit --message "Update supported GitHub Enterprise Server versions"
-            git push origin update-supported-enterprise-server-versions
 
-            body="This PR updates the list of supported GitHub Enterprise Server versions, either because a new "
-            body+="version is about to be feature frozen, or because an old release has been deprecated."
-            body+=$'\n\n'
-            body+="If an old release has been deprecated, please follow the instructions in CONTRIBUTING.md to "
-            body+="deprecate the corresponding version of CodeQL."
-
-            gh pr create --draft \
-              --title "Update supported GitHub Enterprise Server versions" \
-              --body "$body"
+            echo "committed=true" >> $GITHUB_OUTPUT
           fi
+
+      - name: Open PR
+        if: github.event_name != 'pull_request' && steps.prepare-commit.outputs.committed == 'true'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git push origin update-supported-enterprise-server-versions
+
+          body="This PR updates the list of supported GitHub Enterprise Server versions, either because a new "
+          body+="version is about to be feature frozen, or because an old release has been deprecated."
+          body+=$'\n\n'
+          body+="If an old release has been deprecated, please follow the instructions in CONTRIBUTING.md to "
+          body+="deprecate the corresponding version of CodeQL."
+
+          gh pr create --draft \
+            --title "Update supported GitHub Enterprise Server versions" \
+            --body "$body"