Bump @primer/react from 37.31.0 to 38.8.0

Bumps [@primer/react](https://github.com/primer/react) from 37.31.0 to 38.8.0.
- [Release notes](https://github.com/primer/react/releases)
- [Commits](https://github.com/primer/react/compare/@primer/react@37.31.0...@primer/react@38.8.0)

---
updated-dependencies:
- dependency-name: "@primer/react"
  dependency-version: 38.8.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]