Merge pull request #95 from unity-sds/anilnatha-patch-1

Updated marketplace_config.yaml to reference version `25.2-stable` of unity-portal

Author: jl-0

tests/nightly_tests/marketplace_config.yaml

@@ -10,4 +10,4 @@ MarketplaceItems:
   - name: unity-proxy
     version: 24.4-stable
   - name: unity-portal
-    version: 25.1-stable
+    version: 25.2-stable