Update firebase/php-jwt version requirements

Only allow firebase/php-jwt to resolve GHSA-2x45-7fc3-mxwq. Also drop duplicate version constraints for PHP (>=7.2 is also valid for any PHP 8 or later versions).

Author: bobvandevijver

composer.json

@@ -16,10 +16,10 @@
         "source": "https://github.com/messagebird/php-rest-api"
     },
     "require": {
-        "php": ">=7.3|~8.0.0|~8.1.0|~8.2.0",
+        "php": ">=7.3",
         "ext-curl": "*",
         "ext-json": "*",
-        "firebase/php-jwt": "^5.5.1|^6.2"
+        "firebase/php-jwt": "^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5.14",