Fixed a mismatched PackageReference

Author: valadas

DNN Platform/Tests/DotNetNuke.Tests.SourceGenerators/DotNetNuke.Tests.SourceGenerators.csproj

@@ -20,7 +20,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
         <PackageReference Include="NUnit" Version="4.3.2" />
         <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />