dependabot: bump coverlet.msbuild from 3.1.0 to 6.0.2

Bumps [coverlet.msbuild](https://github.com/coverlet-coverage/coverlet) from 3.1.0 to 6.0.2.
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](coverlet-coverage/coverlet@v3.1.0...v6.0.2)

---
updated-dependencies:
- dependency-name: coverlet.msbuild
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

tests/Directory.Build.props

@@ -10,7 +10,7 @@
 
   <!--Enable coverage through coverlet's MSBuild task package-->
   <ItemGroup Condition="'$(EnableCoverage)' == 'true'">
-    <PackageReference Include="coverlet.msbuild" Version="3.1.0">
+    <PackageReference Include="coverlet.msbuild" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>