build(deps): bump actions/setup-go from 5 to 6

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 5 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Tagging the v0.6.0 release.

Tagging the v0.5.0 release.

Merge pull request #4 from rstudio/jmw/pdp-update

better handle multiple paths to parse

fix return result

fix MetadataMap() for SDist

add MetadataMap() to get nested data as a map

downgrade to 1.21

better handle passing in directories