build(deps): bump symfony/mailer from 7.0.7 to 7.1.0

Bumps [symfony/mailer](https://github.com/symfony/mailer) from 7.0.7 to 7.1.0.
- [Release notes](https://github.com/symfony/mailer/releases)
- [Changelog](https://github.com/symfony/mailer/blob/7.1/CHANGELOG.md)
- [Commits](symfony/mailer@v7.0.7...v7.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>