Update cdn77/coding-standard requirement from ^4.0 to ^4.0 || ^5.0

Updates the requirements on cdn77/coding-standard to permit the latest version.

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

composer.json

@@ -31,7 +31,7 @@
         "thecodingmachine/safe": "^1.0"
     },
     "require-dev": {
-        "cdn77/coding-standard": "^4.0",
+        "cdn77/coding-standard": "^4.0 || ^5.0",
         "infection/infection": "^0.20.1",
         "nyholm/psr7": "^1.2",
         "php-http/curl-client": "^2.1",