Update Go extension workflow template to reflect recent enhancements to cli/gh-extension-precompile #9394

Describe the feature or problem you’d like to solve

There have been 2 improvements in cli/gh-extension-precompile that new Go extensions should take advantage of:

• Allow setting Go version from go.mod file gh-extension-precompile#46
• feat: add attestation support gh-extension-precompile#53
• upgrade to actions/checkout@v4

Proposed solution

Update the Go release workflow below to 1) read Go version from go.mod and 2) generate attestations:

From this:

To this:

 jobs: 
   release: 
     runs-on: ubuntu-latest 
     steps: 
       - uses: actions/checkout@v4 
       - uses: cli/gh-extension-precompile@v1 
         with:
           generate_attestations: true
           go_version_file: go.mod

Additional context

Add any other context like screenshots or mockups are helpful, if applicable.