Bump symfony/security-bundle from 4.1.6 to 4.1.7

Bumps [symfony/security-bundle](https://github.com/symfony/security-bundle) from 4.1.6 to 4.1.7.
- [Release notes](https://github.com/symfony/security-bundle/releases)
- [Changelog](https://github.com/symfony/security-bundle/blob/master/CHANGELOG.md)
- [Commits](symfony/security-bundle@v4.1.6...v4.1.7)

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