Nightly zip should use SpecsDev (#7807)

Author: paulb777

.github/workflows/zip.yml

@@ -48,7 +48,7 @@ jobs:
  - name: ZipBuildingTest
 run: |
  mkdir -p zip_output_dir
- sh -x scripts/build_zip.sh zip_output_dir "${{ github.event.inputs.custom_spec_repos || 'https://github.com/firebase/SpecsStaging.git' }}"
+ sh -x scripts/build_zip.sh zip_output_dir "${{ github.event.inputs.custom_spec_repos || 'https://github.com/firebase/SpecsDev.git,https://github.com/firebase/SpecsStaging.git' }}"
  - uses: actions/upload-artifact@v1
 with:
 name: Firebase-actions-dir