chore(deps): bump jni-sys from 0.3.0 to 0.3.1

Bumps [jni-sys](https://github.com/jni-rs/jni-sys) from 0.3.0 to 0.3.1.
- [Release notes](https://github.com/jni-rs/jni-sys/releases)
- [Changelog](https://github.com/jni-rs/jni-sys/blob/v0.3.1/CHANGELOG.md)
- [Commits](jni-rs/jni-sys@v0.3.0...v0.3.1)

---
updated-dependencies:
- dependency-name: jni-sys
  dependency-version: 0.3.1
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]