How can we move .github/workflows/ci.yaml back to synthtool's template?

[suztomo]

As synthtool's template does not call .kokoro/install_dependencies.sh , I had to exclude ci.yaml from synthtool's management: https://github.com/googleapis/google-api-java-client/pull/1699/files#diff-c881f5091bb23fef16e6e6da031e4268bbb11bb3404c1a2c7da8afa53c26f4ecL32.

What's missing in synthtool's template

install_dependencies is not called.

How about the following options?

• build.sh to call install_dependencies.sh if it exists
• GitHub actions (ci.yaml) to call install_dependencies.sh if it exists

Does install_dependencies.sh work in Windows?

Synthtool's template is missing to disable CRLF conversion.

    - name: git configuration to avoid automatic CRLF conversion
      run: |
        git config --global core.autocrlf false
        git config --global core.eol lf