CI: Only build code if token exists (i.e. with Dependabot).

.github/workflows/generated.yml

@@ -28,10 +28,27 @@ permissions:
   contents: read
 
 jobs:
+  check-token:
+    runs-on: ubuntu-latest
+    outputs:
+      token-exists: ${{ steps.token-check.outputs.defined }}
+    steps:
+      - name: Check for Token availability
+        id: token-check
+        # perform secret check & put boolean result as an output
+        shell: bash
+        run: |
+          if [ "${{ secrets.CODE_GENERATOR_PAT }}" != '' ]; then
+            echo "defined=true" >> $GITHUB_OUTPUT;
+          else
+            echo "defined=false" >> $GITHUB_OUTPUT;
+          fi
+
   build:
-    if: ${{ github.event_name == 'pull_request' }}
     name: build
     runs-on: ubuntu-latest
+    needs: [check-token]
+    if: ${{ github.event_name == 'pull_request' && needs.check-token.outputs.token-exists == 'true' }}
     permissions:
       contents: write
     continue-on-error: true