Consider using GOPROXY to control the source of Go module dependencies

[sunya-ch]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Got timely error on GitHub action build:

The job failed during the go mod tidy step due to a 500 Internal Server Error from the Go proxy when fetching github.com/evanphx/json-patch@v4.12.0+incompatible. This is a common transient error related to the proxy server.

Describe the solution you'd like
A clear and concise description of what you want to happen.

    steps:
      # ... other steps like checking out code, go setup

      - name: Set Go proxy workaround
        run: echo "GOPROXY=https://proxy.golang.org,direct" >> $GITHUB_ENV

      - name: Tidy modules
        run: go mod tidy

      # ... the rest of your steps (build, test, etc)

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.