Bump symfony/framework-bundle from 4.2.3 to 4.2.7

Bumps [symfony/framework-bundle](https://github.com/symfony/framework-bundle) from 4.2.3 to 4.2.7.
- [Release notes](https://github.com/symfony/framework-bundle/releases)
- [Changelog](https://github.com/symfony/framework-bundle/blob/master/CHANGELOG.md)
- [Commits](symfony/framework-bundle@v4.2.3...v4.2.7)

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

Author: dependabot[bot]