fix: need to fetch tags to use goreleaser

[takaishi]

The release workflow runs, but goreleaser didn't release. Because goreleaser can't get tags information:

  • getting and validating git state
    • ignoring errors because this is a snapshot     error=git doesn't contain any tags. Either add a tag or use --snapshot
    • git state                                      commit=ce226beb2021a5e9f9656e441848611e164617e6 branch=main current_tag=v0.0.0 previous_tag=<unknown> dirty=false
    • pipe skipped                                   reason=disabled during snapshot mode

So this PR adds to fetch tags.

[takaishi]

thanks!