Bump symfony/mailgun-mailer from 6.2.5 to 6.2.7

Bumps [symfony/mailgun-mailer](https://github.com/symfony/mailgun-mailer) from 6.2.5 to 6.2.7.
- [Release notes](https://github.com/symfony/mailgun-mailer/releases)
- [Changelog](https://github.com/symfony/mailgun-mailer/blob/6.2/CHANGELOG.md)
- [Commits](symfony/mailgun-mailer@v6.2.5...v6.2.7)

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

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Author: dependabot[bot]