Bump MSTest.Sdk to 4.2.1 in global.json and Microsoft.NET.Test.Sdk to 18.4.0 in test project

Author: Necas209

DotNetExtensionsTests/DotNetExtensionsTests.csproj

@@ -18,8 +18,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
-      <PackageReference Update="Microsoft.Testing.Extensions.CodeCoverage" Version="18.3.2" />
+      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     </ItemGroup>
 
 </Project>

global.json

@@ -5,7 +5,7 @@
         "allowPrerelease": false
     },
     "msbuild-sdks": {
-        "MSTest.Sdk": "4.1.0"
+        "MSTest.Sdk": "4.2.1"
     },
     "test": {
         "runner": "Microsoft.Testing.Platform"