Bump Microsoft.Data.SqlClient from 2.1.2 to 4.0.0

Bumps [Microsoft.Data.SqlClient](https://github.com/dotnet/sqlclient) from 2.1.2 to 4.0.0.
- [Release notes](https://github.com/dotnet/sqlclient/releases)
- [Changelog](https://github.com/dotnet/SqlClient/blob/main/CHANGELOG.md)
- [Commits](dotnet/SqlClient@v2.1.2...v4.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.Data.SqlClient
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

src/ServiceControl.Transports.SqlServer/ServiceControl.Transports.SqlServer.csproj

@@ -9,7 +9,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Data.SqlClient" Version="2.1.2" />
+    <PackageReference Include="Microsoft.Data.SqlClient" Version="4.0.0" />
     <PackageReference Include="Microsoft.Data.SqlClient.SNI" Version="4.0.0" />
     <PackageReference Include="NServiceBus.Transport.SqlServer" Version="6.3.2" />    
   </ItemGroup>