test(Dependencies): update dependencies (#689)

Author: ArgoZhang

test/Directory.Build.props

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.*" />
     <PackageReference Include="xunit" Version="2.*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.*">
       <PrivateAssets>all</PrivateAssets>

test/UnitTestEditor/UnitTestEditor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <ItemGroup>
-    <PackageReference Include="bunit" Version="1.*" />
+    <PackageReference Include="bunit" Version="2.*" />
   </ItemGroup>
 
   <ItemGroup>