Update dependency prettier to ^2.8.4

Author: renovate[bot]

package.json

@@ -68,7 +68,7 @@
     "nyc": "^15.1.0",
     "parcel": "2.x",
     "parcel-bundler": "^1.12.5",
-    "prettier": "^2.5.1",
+    "prettier": "^2.8.4",
     "recursive-readdir": "^2.2.2",
     "ts-graphql-plugin": "^2.1.6",
     "ts-node": "^10.7.0",