updating build ref file

Author: niphlod

assets/dbatools-buildref-index.json

@@ -1,5 +1,5 @@
 {
-    "LastUpdated": "2025-01-16T00:00:00",
+    "LastUpdated": "2025-02-17T00:00:00",
     "Data": [
         {
             "Version": "8.0.47",
@@ -4695,6 +4695,11 @@
             "Version": "15.0.4415",
             "KBList": "5049235"
         },
+        {
+            "CU": "CU31",
+            "Version": "15.0.4420",
+            "KBList": "5049296"
+        },
         {
             "Version": "16.0.100",
             "Name": "2022"