only run tests on non-forks

.github/workflows/custard-ci-dev.yaml

@@ -61,6 +61,7 @@ jobs:
           echo "setups=$(./cloud-samples-tools/bin/custard setup-files .github/config/nodejs-dev.jsonc paths.txt)" >> $GITHUB_OUTPUT
 
   nodejs-test:
+    if: github.event.pull_request && github.event.pull_request.head.repo.fork == false
     name: test
     needs: affected
     runs-on: ubuntu-latest

.github/workflows/custard-ci.yaml

@@ -31,40 +31,40 @@
 # TODO: remove all jobs except region-tags (should be tested by custard-run workflows)
 jobs:
   affected:
     name: Finding affected tests (legacy)
     runs-on: ubuntu-latest
     timeout-minutes: 2
     outputs:
       nodejs-paths: ${{ steps.nodejs.outputs.paths }}
       nodejs-setups: ${{ steps.nodejs.outputs.setups }}
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           fetch-depth: 0
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:
           repository: GoogleCloudPlatform/cloud-samples-tools
           ref: v0.3.2
           path: cloud-samples-tools
       - name: Create `bin` directory for cloud-samples-tools binaries
         run: mkdir bin
         working-directory: cloud-samples-tools
       - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5
         with:
           go-version: ${{ env.GO_VERSION }}
       - name: Build Custard (from cloud-samples-tools)
         run: go build -o ../bin -v ./...
         working-directory: cloud-samples-tools/custard
       - name: Get diffs
         run: git --no-pager diff --name-only HEAD origin/main | tee diffs.txt
       - name: Find Node.js affected packages
         id: nodejs
         run: |
           echo "paths=$(./cloud-samples-tools/bin/custard affected .github/config/nodejs.jsonc diffs.txt paths.txt)" >> $GITHUB_OUTPUT
           cat paths.txt
           echo "setups=$(./cloud-samples-tools/bin/custard setup-files .github/config/nodejs.jsonc paths.txt)" >> $GITHUB_OUTPUT
 
   lint:
     needs: affected
     runs-on: ubuntu-latest
     timeout-minutes: 5
@@ -122,6 +122,7 @@
       - run: ./.github/workflows/utils/region-tags-tests.sh
 
   test:
+    if: github.event.pull_request && github.event.pull_request.head.repo.fork == false
     name: test (legacy)
     needs: affected
     runs-on: ubuntu-latest