Bump symfony/http-kernel from 4.3.8 to 4.4.50

Bumps [symfony/http-kernel](https://github.com/symfony/http-kernel) from 4.3.8 to 4.4.50.
- [Release notes](https://github.com/symfony/http-kernel/releases)
- [Changelog](https://github.com/symfony/http-kernel/blob/6.2/CHANGELOG.md)
- [Commits](symfony/http-kernel@v4.3.8...v4.4.50)

---
updated-dependencies:
- dependency-name: symfony/http-kernel
  dependency-type: direct:development
...

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

Author: dependabot[bot]