Update dependency prettier to v2.8.7

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "babel-jest": "26.3.0",
     "next": "9.5.2",
     "husky": "4.2.5",
-    "prettier": "2.0.5",
+    "prettier": "2.8.7",
     "eslint-plugin-prettier": "3.1.4",
     "tsdx": "0.13.2",
     "tslib": "2.0.1",