Bump System.Data.SqlClient from 4.8.6 to 4.9.0 in /src (#809)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -19,7 +19,7 @@
     <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageVersion Include="Polyfill" Version="7.4.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.141" />
-    <PackageVersion Include="System.Data.SqlClient" Version="4.8.6" />
+    <PackageVersion Include="System.Data.SqlClient" Version="4.9.0" />
     <PackageVersion Include="Verify" Version="28.2.1" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
     <PackageVersion Include="Verify.NUnit" Version="28.2.0" />