Update symfony/phpunit-bridge requirement from ^6 to ^6 || ^7

Updates the requirements on [symfony/phpunit-bridge](https://github.com/symfony/phpunit-bridge) to permit the latest version.
- [Release notes](https://github.com/symfony/phpunit-bridge/releases)
- [Changelog](https://github.com/symfony/phpunit-bridge/blob/6.3/CHANGELOG.md)
- [Commits](symfony/phpunit-bridge@v6.0.0...v7.0.1)

---
updated-dependencies:
- dependency-name: symfony/phpunit-bridge
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -36,7 +36,7 @@
     "symfony/yaml": "^6",
     "beberlei/porpaginas": "^1.2 || ^2.0",
     "php-coveralls/php-coveralls": "^2.1.0",
-    "symfony/phpunit-bridge": "^6",
+    "symfony/phpunit-bridge": "^6 || ^7",
     "phpstan/phpstan": "^1.8",
     "composer/package-versions-deprecated": "^1.8"
   },