Convert to async/await

GitOrigin-RevId: 45c139a64c848650f1f51e64e8ebd233211241fb

services/notifications/package.json

@@ -19,6 +19,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "@overleaf/fetch-utils": "*",
     "@overleaf/logger": "*",
     "@overleaf/metrics": "*",
     "@overleaf/mongo-utils": "*",
@@ -29,11 +30,9 @@
     "bunyan": "^1.8.15",
     "express": "^4.21.2",
     "method-override": "^3.0.0",
-    "mongodb-legacy": "6.1.3",
-    "request": "^2.88.2"
+    "mongodb-legacy": "6.1.3"
   },
   "devDependencies": {
-    "@types/request": "^2.48.12",
     "chai-as-promised": "^7.1.1",
     "typescript": "^5.0.4",
     "vitest": "^3.2.4"