Bump coverlet.collector from 6.0.4 to 8.0.0

---
updated-dependencies:
- dependency-name: coverlet.collector
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: coverlet.collector
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" PrivateAssets="all" />
-    <PackageReference Include="coverlet.collector" Version="6.0.4" PrivateAssets="all" />
+    <PackageReference Include="coverlet.collector" Version="8.0.0" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>