Update firebase/php-jwt requirement from ^6.2 to ^7.0

Updates the requirements on [firebase/php-jwt](https://github.com/firebase/php-jwt) to permit the latest version.
- [Release notes](https://github.com/firebase/php-jwt/releases)
- [Changelog](https://github.com/firebase/php-jwt/blob/main/CHANGELOG.md)
- [Commits](googleapis/php-jwt@v6.2.0...v7.0.2)

---
updated-dependencies:
- dependency-name: firebase/php-jwt
  dependency-version: 7.0.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -34,7 +34,7 @@
     "require-dev": {
         "cakephp/cakephp": "^5.1.0",
         "cakephp/cakephp-codesniffer": "^5.0",
-        "firebase/php-jwt": "^6.2",
+        "firebase/php-jwt": "^7.0",
         "phpunit/phpunit": "^10.5.32 || ^11.3.3 || ^12.0.9"
     },
     "suggest": {