Bump rb-sys from 0.9.99 to 0.9.100

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.99 to 0.9.100.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](oxidize-rb/rb-sys@v0.9.99...v0.9.100)

---
updated-dependencies:
- dependency-name: rb-sys
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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