build(deps): bump path-to-regexp and unleash-server

Bumps [path-to-regexp](https://github.com/pillarjs/path-to-regexp) to 6.3.0 and updates ancestor dependency [unleash-server](https://github.com/unleash/unleash). These dependencies need to be updated together.


Updates `path-to-regexp` from 2.4.0 to 6.3.0
- [Release notes](https://github.com/pillarjs/path-to-regexp/releases)
- [Changelog](https://github.com/pillarjs/path-to-regexp/blob/master/History.md)
- [Commits](pillarjs/path-to-regexp@v2.4.0...v6.3.0)

Updates `unleash-server` from 4.12.6 to 6.2.1
- [Release notes](https://github.com/unleash/unleash/releases)
- [Changelog](https://github.com/Unleash/unleash/blob/main/CHANGELOG.md)
- [Commits](Unleash/unleash@v4.12.6...v6.2.1)

---
updated-dependencies:
- dependency-name: path-to-regexp
  dependency-type: indirect
- dependency-name: unleash-server
  dependency-type: direct:production
...

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