fix: pin prettier to 2.3.x (#641)

Author: JustinBeckwith

package.json

@@ -55,7 +55,7 @@
     "meow": "^9.0.0",
     "json5": "^2.1.3",
     "ncp": "^2.0.0",
-    "prettier": "^2.1.2",
+    "prettier": "~2.3.0",
     "rimraf": "^3.0.2",
     "update-notifier": "^5.0.0",
     "write-file-atomic": "^3.0.3"