Bump wayland-cursor from 0.31.5 to 0.31.6

Bumps [wayland-cursor](https://github.com/smithay/wayland-rs) from 0.31.5 to 0.31.6.
- [Release notes](https://github.com/smithay/wayland-rs/releases)
- [Changelog](https://github.com/Smithay/wayland-rs/blob/master/historical_changelog.md)
- [Commits](https://github.com/smithay/wayland-rs/commits)

---
updated-dependencies:
- dependency-name: wayland-cursor
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>