chore(deps): update dependency prettier to v2.8.7

Author: renovate[bot]

package.json

@@ -73,7 +73,7 @@
     "gh-pages": "3.2.3",
     "light-ts-loader": "1.1.2",
     "npm-run-all": "4.1.5",
-    "prettier": "2.6.2",
+    "prettier": "2.8.7",
     "react": "16.14.0",
     "react-dom": "16.14.0",
     "react-test-renderer": "16.14.0",