Update dependency constraints

Author: ADmad

composer.json

@@ -39,11 +39,11 @@
         "irc": "irc://irc.freenode.org/muffin"
     },
     "require": {
-        "cakephp/cakephp": "4.x-dev"
+        "cakephp/cakephp": "^4.0"
     },
     "require-dev": {
-        "cakephp/cakephp-codesniffer": "dev-next",
-        "phpunit/phpunit": "~8.4.0"
+        "cakephp/cakephp-codesniffer": "^2.0",
+        "phpunit/phpunit": "~8.5.0"
     },
     "autoload": {
         "psr-4": {