Bump winit from 0.28.6 to 0.28.7

Bumps [winit](https://github.com/rust-windowing/winit) from 0.28.6 to 0.28.7.
- [Release notes](https://github.com/rust-windowing/winit/releases)
- [Changelog](https://github.com/rust-windowing/winit/blob/master/CHANGELOG.md)
- [Commits](rust-windowing/winit@v0.28.6...v0.28.7)

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

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