Update dependencies

Define PHP version to use.
Update all dependencies to newer versions.

composer.json

@@ -15,8 +15,9 @@
         }
     },
     "require": {
-        "typo3/cms-core": "^10.4",
-        "typo3/cms-extbase": "^10.4"
+        "php": "7.4.*",
+        "typo3/cms-core": "^11.5",
+        "typo3/cms-extbase": "^11.5"
     },
     "extra": {
         "typo3/cms": {
@@ -24,7 +25,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.3",
+        "phpunit/phpunit": "^9.5",
         "phpspec/prophecy-phpunit": "^2.0"
     },
     "config": {