DEV: Update rubocop-discourse to version 3.8.0 (#52)

Author: Flink

Gemfile.lock

@@ -86,4 +86,4 @@ DEPENDENCIES
   syntax_tree
 
 BUNDLED WITH
-   2.5.5
+   2.5.10

package.json

@@ -1,9 +1,9 @@
 {
   "private": true,
   "devDependencies": {
-    "@discourse/lint-configs": "^1.3.5",
-    "ember-template-lint": "^5.13.0",
-    "eslint": "^8.56.0",
-    "prettier": "^2.8.8"
+    "@discourse/lint-configs": "1.3.9",
+    "ember-template-lint": "6.0.0",
+    "eslint": "8.57.0",
+    "prettier": "2.8.8"
   }
 }