Merge pull request #6174 from robertpustulka/3.0-cache-dependency

Update Cache cakephp/core dependency to ~3.0

src/Cache/composer.json

@@ -14,7 +14,7 @@
         }
     },
     "require": {
-        "cakephp/core": "dev-master"
+        "cakephp/core": "~3.0"
     },
     "minimum-stability": "beta"
 }