chore: update AdminJS to v6

BREAKING CHANGE: This package version should be used with AdminJS v6

Author: dziraf

package.json

@@ -21,7 +21,7 @@
   },
   "peerDependencies": {
     "@adminjs/design-system": "^2.0.4",
-    "adminjs": "^5.5.1"
+    "adminjs": ">=6.0.0"
   },
   "devDependencies": {
     "@adminjs/design-system": "^2.0.4",
@@ -36,7 +36,7 @@
     "@types/xml2js": "^0.4.5",
     "@typescript-eslint/eslint-plugin": "^4.6.0",
     "@typescript-eslint/parser": "^4.6.0",
-    "adminjs": "^5.5.1",
+    "adminjs": "^6.0.0",
     "date-fns": "^2.16.1",
     "eslint": "^7.12.1",
     "eslint-config-prettier": "^6.15.0",