Bump coverlet.msbuild from 3.2.0 to 6.0.0 (#241)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

WebDriverManager.Tests/WebDriverManager.Tests.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="coverlet.msbuild" Version="3.2.0" />
+        <PackageReference Include="coverlet.msbuild" Version="6.0.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
         <PackageReference Include="Selenium.WebDriver" Version="4.9.1" />
         <PackageReference Include="xunit" Version="2.4.2" />