Bump prettier from 2.8.4 to 2.8.7 (#29)

Author: dependabot[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "eslint-config-prettier": "^8.8.0",
     "eslint-plugin-prettier": "^4.2.1",
     "mocha": "^10.2.0",
-    "prettier": "^2.8.1",
+    "prettier": "^2.8.7",
     "proxyquire": "^2.1.3",
     "sinon": "^15.0.3",
     "sinon-chai": "^3.7.0",