Bump symfony/security from 4.4.19 to 4.4.23 (#47)

Bumps [symfony/security](https://github.com/symfony/security) from 4.4.19 to 4.4.23.
- [Release notes](https://github.com/symfony/security/releases)
- [Changelog](https://github.com/symfony/security/blob/4.4/CHANGELOG.md)
- [Commits](symfony/security@v4.4.19...v4.4.23)

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