Update Node.js to v22

Author: renovate[bot]

.github/workflows/firebase_functions.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 22.x
       - uses: actions/cache@v4
         with:
           path: ~/.npm

firebase/functions/package-lock.json

@@ -10,7 +10,7 @@
     "logs": "firebase functions:log"
   },
   "engines": {
-    "node": "18"
+    "node": "22"
   },
   "main": "lib/index.js",
   "dependencies": {
@@ -23,7 +23,7 @@
   "devDependencies": {
     "@types/escape-html": "^1.0.1",
     "@types/he": "^1.1.2",
-    "@types/node": "^18.0.0",
+    "@types/node": "^22.0.0",
     "@types/request-promise-native": "^1.0.18",
     "tslint": "^6.1.3",
     "typescript": "^5.0.0"