fix(deps)(deps-dev): bump @types/node in /services/notification

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.20.55 to 26.4.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 26.4.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

services/notification/package.json

@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@types/amqplib": "^0.10.5",
-    "@types/node": "^22.5.0",
+    "@types/node": "^26.4.0",
     "tsx": "^4.23.1",
     "typescript": "^7.0.2",
     "vitest": "^4.1.10",