Go 1.22 support

[stefanb]

While testing with Go 1.22rc1 (prerelease of upcoming Go 1.22, scheduled to be released February) in

• go 1.22.0 Homebrew/homebrew-core#157782

the test failed with error:

  ==> /opt/homebrew/Cellar/goplus/1.1.13/bin/gop env GOPVERSION
  panic: interface conversion: types.Sizes is *types.gcSizes, not *types.StdSizes
  
  goroutine 1 [running]:
  github.com/goplus/gox.init.0()
  	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/goplus/[email protected]/builtin.go:735 +0xac

The test failed at gop env GOPVERSION.

Full test can be seen in https://github.com/Homebrew/homebrew-core/blob/1c34702ce43b9811e00c43b220dea3b2fbe8790f/Formula/g/goplus.rb#L34-L53