Discussion: get rid of setup-go dep, due to outdated code and inability to update any dependencies

Hello, I would like to ask everyone in @golangci/team and @golangci/core-team about you opinion in removing the setup-go as direct dependency.

Now we are stuck in upgrading any dependencies, fixing any vulns, due to inability to build the setup-go package.

So if we remove it then we will need to explicitly install go, like

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-go@v2  # <-- here
      - name: golangci-lint
        uses: golangci/golangci-lint-action@v2

of course it will require to bump v3.

[SVilgelm]

@StevenACoffman here it is: https://github.com/golangci/golangci-lint-action/pull/404/files#diff-b335630551682c19a781afebcf4d07bf978fb1f8ac04c6bf87428ed5106870f5R12

[SVilgelm]

the code is merged, so I will work on updating some other dependencies and the will bump v3 of the action