Bump MSTest.TestFramework from 3.8.3 to 3.9.3

---
updated-dependencies:
- dependency-name: MSTest.TestFramework
  dependency-version: 3.9.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: mstest
...

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

Author: dependabot[bot]

test/PlcInterface.IntegrationTests/PlcInterface.IntegrationTests.csproj

@@ -3,7 +3,7 @@
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.2" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="9.0.4" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.8.3" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.9.3" />
   </ItemGroup>
 
   <ItemGroup>