Bump knplabs/github-api from 3.14.1 to 3.15.0

Bumps [knplabs/github-api](https://github.com/KnpLabs/php-github-api) from 3.14.1 to 3.15.0.
- [Release notes](https://github.com/KnpLabs/php-github-api/releases)
- [Changelog](https://github.com/KnpLabs/php-github-api/blob/master/CHANGELOG-3.X.md)
- [Commits](KnpLabs/php-github-api@v3.14.1...v3.15.0)

---
updated-dependencies:
- dependency-name: knplabs/github-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

composer.json

@@ -28,7 +28,7 @@
  "doctrine/dbal": "3.8.6",
  "guzzlehttp/guzzle": "7.9.2",
  "http-interop/http-factory-guzzle": "1.2.0",
- "knplabs/github-api": "3.14.1",
+ "knplabs/github-api": "3.15.0",
  "laravel/framework": "10.48.14",
  "laravel/legacy-factories": "1.4.0",
  "laravel/socialite": "5.15.1",