Bump minBoxVersion for mysql fix

CloudronManifest.json

@@ -32,6 +32,6 @@
   "changelog": "file://CHANGELOG",
   "postInstallMessage": "file://POSTINSTALL.md",
   "optionalSso": true,
-  "minBoxVersion": "4.1.3",
+  "minBoxVersion": "4.1.4",
   "documentationUrl": "https://cloudron.io/documentation/apps/wordpress/"
 }