Update releases-index.json (#9883)

Author: rbhanda

release-notes/releases-index.json

@@ -3,11 +3,11 @@
     "releases-index": [
         {
             "channel-version": "10.0",
-            "latest-release": "10.0.0-preview.3",
-            "latest-release-date": "2025-04-10",
+            "latest-release": "10.0.0-preview.4",
+            "latest-release-date": "2025-05-13",
             "security": false,
-            "latest-runtime": "10.0.0-preview.3.25171.5",
-            "latest-sdk": "10.0.100-preview.3.25201.16",
+            "latest-runtime": "10.0.0-preview.4.25258.110",
+            "latest-sdk": "10.0.100-preview.4.25258.110",
             "product": ".NET",
             "support-phase": "preview",
             "release-type": "lts",