Bump symfony/debug-bundle from 4.4.14 to 4.4.15
Bump symfony/debug-bundle from 4.4.14 to 4.4.15

Bumps [symfony/debug-bundle](https://github.com/symfony/debug-bundle) from 4.4.14 to 4.4.15.
- [Release notes](https://github.com/symfony/debug-bundle/releases)
- [Changelog](https://github.com/symfony/debug-bundle/blob/5.x/CHANGELOG.md)
- [Commits](https://github.com/symfony/debug-bundle/compare/v4.4.14...v4.4.15)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
sonata-project/sandbox,sonata-project/sandbox,sonata-project/sandbox