fix: Wrong SDK version

Author: linkdotnet

src/bunit.template/template/Company.BlazorTests1.csproj

@@ -18,7 +18,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="bunit" Version="#{RELEASE_VERSION}#" />
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.16.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
 		<PackageReference Include="coverlet.collector" Version="10.0.1">
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 			<PrivateAssets>all</PrivateAssets>