Update dependency Microsoft.NET.Test.Sdk to 18.3.0

Author: renovate[bot]

src/Cake.AzureDevOps.Tests/Cake.AzureDevOps.Tests.csproj

@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="Cake.Common" Version="5.0.0" />
     <PackageReference Include="Cake.Core" Version="5.0.0" />
     <PackageReference Include="Cake.Testing" Version="5.0.0" />