[jnigen] Bump actions/checkout from 3.1.0 to 3.3.0 (https://github.com/dart-lang/jnigen/issues/169)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.1.0 to 3.3.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8...ac593985615ec2ede58e132d2e21d2b1cbd6127c)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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