chore(deps): update dependency @types/jest to v28 (#42)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

functions/package-lock.json

@@ -37,7 +37,7 @@
   },
   "devDependencies": {
     "@octokit/webhooks-types": "5.6.0",
-    "@types/jest": "27.5.2",
+    "@types/jest": "28.1.0",
     "@types/node": "17.0.31",
     "@typescript-eslint/eslint-plugin": "5.27.0",
     "@typescript-eslint/parser": "5.27.0",