chore: update typescript-eslint monorepo to v4.9.0

Author: renovate-bot

package-lock.json

@@ -53,8 +53,8 @@
     "@types/node": "13.13.34",
     "@types/node-sass": "4.11.1",
     "@types/sass": "1.16.0",
-    "@typescript-eslint/eslint-plugin": "4.8.2",
-    "@typescript-eslint/parser": "4.8.2",
+    "@typescript-eslint/eslint-plugin": "4.9.0",
+    "@typescript-eslint/parser": "4.9.0",
     "autoprefixer": "10.0.4",
     "chokidar": "3.4.3",
     "codecov": "3.8.1",