fix(deps): update dependency @platform-mesh/portal-server-lib to v0.5.13 (#244)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

backend/package-lock.json

@@ -29,7 +29,7 @@
     "@nestjs/platform-express": "11.1.8",
     "@nestjs/serve-static": "5.0.4",
     "@openmfp/portal-server-lib": "0.162.12",
-    "@platform-mesh/portal-server-lib": "0.5.12",
+    "@platform-mesh/portal-server-lib": "0.5.13",
     "axios": "1.12.2",
     "class-validator": "0.14.2",
     "cookie-parser": "1.4.7",