C#: Remove System.Data.SqlClient 4.8.2 stub.

Author: michaelnebel

csharp/ql/test/query-tests/Security Features/CWE-089/options

@@ -1,5 +1,5 @@
 semmle-extractor-options: /nostdlib /noconfig
 semmle-extractor-options: --load-sources-from-project:../../../resources/stubs/Dapper/2.0.90/Dapper.csproj
-semmle-extractor-options: --load-sources-from-project:../../../resources/stubs/System.Data.SqlClient/4.8.2/System.Data.SqlClient.csproj
+semmle-extractor-options: --load-sources-from-project:../../../resources/stubs/System.Data.SqlClient/4.8.3/System.Data.SqlClient.csproj
 semmle-extractor-options: ${testdir}/../../../resources/stubs/EntityFramework.cs
 semmle-extractor-options: ${testdir}/../../../resources/stubs/System.Windows.cs