chore: update AdminJS to v6

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

Author: dziraf

package.json

@@ -15,7 +15,7 @@
     "check:all": "yarn lint && yarn build && yarn test"
   },
   "peerDependencies": {
-    "adminjs": "^5.3.3"
+    "adminjs": ">=6.0.0"
   },
   "devDependencies": {
     "@semantic-release/git": "^9.0.0",
@@ -25,7 +25,7 @@
     "@types/node": "^15.12.2",
     "@typescript-eslint/eslint-plugin": "^4.6.0",
     "@typescript-eslint/parser": "^4.6.0",
-    "adminjs": "^5.3.3",
+    "adminjs": "^6.0.0",
     "eslint": "^7.12.1",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-import": "^2.22.1",