chore(deps-dev): bump @types/node from 24.0.7 to 24.9.1 in /backend

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 24.0.7 to 24.9.1.
- [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: 24.9.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/package.json

@@ -82,7 +82,7 @@
         "@types/cookie-parser": "^1.4.9",
         "@types/express": "^5.0.3",
         "@types/jest": "^29.5.2",
-        "@types/node": "^24.0.7",
+        "@types/node": "^24.9.1",
         "@types/supertest": "^6.0.3",
         "@types/passport-github": "^1.1.12",
         "@types/multer": "^2.0.0",

backend/yarn.lock

@@ -3514,12 +3514,12 @@
   dependencies:
     "@types/express" "*"
 
-"@types/node@*", "@types/node@>=13.7.0", "@types/node@^24.0.7":
-  version "24.0.7"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-24.0.7.tgz#ee580f7850c7eabaeef61ef96b8d8c04fdf94f53"
-  integrity sha512-YIEUUr4yf8q8oQoXPpSlnvKNVKDQlPMWrmOcgzoduo7kvA2UF0/BwJ/eMKFTiTtkNL17I0M6Xe2tvwFU7be6iw==
+"@types/node@*", "@types/node@>=13.7.0", "@types/node@^24.9.1":
+  version "24.9.1"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-24.9.1.tgz#b7360b3c789089e57e192695a855aa4f6981a53c"
+  integrity sha512-QoiaXANRkSXK6p0Duvt56W208du4P9Uye9hWLWgGMDTEoKPhuenzNcC4vGUmrNkiOKTlIrBoyNQYNpSwfEZXSg==
   dependencies:
-    undici-types "~7.8.0"
+    undici-types "~7.16.0"
 
 "@types/oauth@*":
   version "0.9.6"
@@ -8685,10 +8685,10 @@ uint8array-extras@^1.4.0:
   resolved "https://registry.yarnpkg.com/uint8array-extras/-/uint8array-extras-1.4.0.tgz#e42a678a6dd335ec2d21661333ed42f44ae7cc74"
   integrity sha512-ZPtzy0hu4cZjv3z5NW9gfKnNLjoz4y6uv4HlelAjDK7sY/xOkKZv9xK/WQpcsBB3jEybChz9DPC2U/+cusjJVQ==
 
-undici-types@~7.8.0:
-  version "7.8.0"
-  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-7.8.0.tgz#de00b85b710c54122e44fbfd911f8d70174cd294"
-  integrity sha512-9UJ2xGDvQ43tYyVMpuHlsgApydB8ZKfVYTsLDhXkFL/6gfkp+U8xTGdh8pMJv1SpZna0zxG1DwsKZsreLbXBxw==
+undici-types@~7.16.0:
+  version "7.16.0"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-7.16.0.tgz#ffccdff36aea4884cbfce9a750a0580224f58a46"
+  integrity sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==
 
 universalify@^2.0.0:
   version "2.0.1"