Go: Fix Mage.

[Gacko]

This is something I was confronted with yesterday during putting together the releases. Since we removed the go.work, one could only run Mage from inside the magefiles directory. But in there, the relevant files such as the TAG file are missing.

To be able to execute Mage from the root directory, I removed the go.mod inside the magefiles directory and ran the following script to update the go.mod in the root directory:

clear ; for module in $(dirname **/go.mod | sort --unique)
do
  echo "# ${module}"
  pushd "${module}" &> /dev/null
  for i in {1..3}
  do
    rm -f go.sum
    go get -t -u ./...
    go mod tidy
  done
  popd &> /dev/null
done

/triage accepted
/kind bug
/priority backlog
/cc @strongjz @tao12345666333

[tao12345666333]

/lgtm

[k8s-ci-robot]

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