Merge pull request #11 from caveman8080/dependabot/nuget/tests/ACMECertManager.Tests/Microsoft.NET.Test.Sdk-18.4.0

Bump Microsoft.NET.Test.Sdk from 18.3.0 to 18.4.0

Author: caveman8080

tests/ACMECertManager.Tests/ACMECertManager.Tests.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />