Bump symfony/mailer from 6.0.8 to 6.0.11

Bumps [symfony/mailer](https://github.com/symfony/mailer) from 6.0.8 to 6.0.11.
- [Release notes](https://github.com/symfony/mailer/releases)
- [Changelog](https://github.com/symfony/mailer/blob/6.1/CHANGELOG.md)
- [Commits](symfony/mailer@v6.0.8...v6.0.11)

---
updated-dependencies:
- dependency-name: symfony/mailer
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]