Update dependency prettier to v2.8.6

Author: renovate[bot]

package-lock.json

@@ -110,7 +110,7 @@
     "eslint-config-prettier": "8.3.0",
     "glob": "7.1.7",
     "mocha": "9.1.1",
-    "prettier": "2.3.2",
+    "prettier": "2.8.6",
     "semantic-release": "17.4.7",
     "semantic-release-vsce": "3.4.1",
     "typescript": "4.4.3",