Fix System.Data.SqlClient baseline (#34352) (#34397)

* Fix System.Data.SqlClient version

Fixes #34351

* Update Microsoft.Windows.Compatibility.pkgproj

Author: mmitche

src/libraries/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj

@@ -59,7 +59,7 @@
       <Version>4.5.0</Version>
     </LibraryPackage>
     <LibraryPackage Include="System.Data.SqlClient">
-      <Version>4.8.0</Version>
+      <Version>4.8.1</Version>
     </LibraryPackage>
 
     <!-- Service model packages -->

src/libraries/pkg/baseline/packageIndex.json

@@ -2256,9 +2256,11 @@
         "4.5.1",
         "4.6.0",
         "4.6.1",
-        "4.7.0"
+        "4.7.0",
+        "4.8.0",
+        "4.8.1",
       ],
-      "BaselineVersion": "5.0.0",
+      "BaselineVersion": "4.8.0",
       "InboxOn": {
         "net461": "4.1.0.0",
         "monoandroid10": "Any",
@@ -7249,4 +7251,4 @@
       "System.Xml.XDocument"
     ]
   }
-}
+}