Bump symfony/mime from 4.4.34 to 5.4.0

Bumps [symfony/mime](https://github.com/symfony/mime) from 4.4.34 to 5.4.0.
- [Release notes](https://github.com/symfony/mime/releases)
- [Changelog](https://github.com/symfony/mime/blob/5.4/CHANGELOG.md)
- [Commits](symfony/mime@v4.4.34...v5.4.0)

---
updated-dependencies:
- dependency-name: symfony/mime
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

composer.json

@@ -22,7 +22,7 @@
         "symfony/flex": "^1.1",
         "symfony/form": "^5.4",
         "symfony/framework-bundle": "^4.2",
-        "symfony/mime": "^4.2",
+        "symfony/mime": "^5.4",
         "symfony/monolog-bundle": "^3.1",
         "symfony/process": "^5.4",
         "symfony/security-bundle": "^4.1",