chore(deps): update dependency file-type to v21 [security]

Author: renovate[bot]

apps/backend/package.json

@@ -41,7 +41,7 @@
     "cookie-parser": "^1.4.6",
     "csurf": "^1.11.0",
     "express-session": "^1.17.3",
-    "file-type": "^16.5.4",
+    "file-type": "^21.0.0",
     "helmet": "^7.1.0",
     "mysql2": "^3.6.5",
     "nest-casl": "^1.9.0",