Bump @types/cors from 2.8.12 to 2.8.17 in /backend

Bumps [@types/cors](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/cors) from 2.8.12 to 2.8.17.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/cors)

---
updated-dependencies:
- dependency-name: "@types/cors"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

backend/package-lock.json

@@ -21,7 +21,7 @@
   "devDependencies": {
     "@types/aws-lambda": "^8.10.125",
     "@types/cookie-parser": "^1.4.3",
-    "@types/cors": "^2.8.12",
+    "@types/cors": "^2.8.17",
     "@types/eslint": "^8.44.6",
     "@types/eslint-plugin-prettier": "^3.1.0",
     "@types/express": "^4.17.21",