Bump the dependencies group with 2 updates

Bumps the dependencies group with 2 updates: [symfony/flex](https://github.com/symfony/flex) and [phpstan/phpstan](https://github.com/phpstan/phpstan).


Updates `symfony/flex` from 2.3.3 to 2.4.0
- [Release notes](https://github.com/symfony/flex/releases)
- [Commits](symfony/flex@v2.3.3...v2.4.0)

Updates `phpstan/phpstan` from 1.10.38 to 1.10.39
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/1.11.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.10.38...1.10.39)

---
updated-dependencies:
- dependency-name: symfony/flex
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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