Update symfony/mime requirement from ^6.2 to ^6.2 || ^7.0 (#565)

Updates the requirements on [symfony/mime](https://github.com/symfony/mime) to permit the latest version.
- [Release notes](https://github.com/symfony/mime/releases)
- [Changelog](https://github.com/symfony/mime/blob/7.1/CHANGELOG.md)
- [Commits](symfony/mime@v6.2.0...v7.1.1)

---
updated-dependencies:
- dependency-name: symfony/mime
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -38,7 +38,7 @@
         "symfony/finder": "^6.2",
         "symfony/http-foundation": "^6.0.20",
         "symfony/http-kernel": "^6.0.20",
-        "symfony/mime": "^6.2",
+        "symfony/mime": "^6.2 || ^7.0",
         "symfony/routing": "^6.2",
         "symfony/string": "^6.2",
         "symfony/var-dumper": "^6.2 || ^7.0",