Fix missing require of the symfony/cache-contracts package (#506)

Author: matthew-gill

composer.json

@@ -23,6 +23,7 @@
         "jean85/pretty-package-versions": "^1.5 || ^2.0",
         "php-http/discovery": "^1.11",
         "sentry/sdk": "^3.1",
+        "symfony/cache-contracts": "^2.4",
         "symfony/config": "^3.4.44||^4.4.20||^5.0.11",
         "symfony/console": "^3.4.44||^4.4.20||^5.0.11",
         "symfony/dependency-injection": "^3.4.44||^4.4.20||^5.0.11",
@@ -46,7 +47,6 @@
         "phpunit/phpunit": "^8.5||^9.0",
         "symfony/browser-kit": "^3.4.44||^4.4.20||^5.0.11",
         "symfony/cache": "^3.4.44||^4.4.20||^5.0.11",
-        "symfony/cache-contracts": "^2.4",
         "symfony/dom-crawler": "^3.4.44||^4.4.20||^5.0.11",
         "symfony/framework-bundle": "^3.4.44||^4.4.20||^5.0.11",
         "symfony/messenger": "^4.4.20||^5.0.11",