Bump coverlet.collector from 6.0.0 to 6.0.4 (#23)

---
updated-dependencies:
- dependency-name: coverlet.collector
  dependency-version: 6.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -25,7 +25,7 @@
   </ItemGroup>
   <!-- Test dependencies -->
   <ItemGroup>
-    <PackageVersion Include="coverlet.collector" Version="6.0.0"/>
+    <PackageVersion Include="coverlet.collector" Version="6.0.4"/>
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1"/>
     <PackageVersion Include="xunit" Version="2.9.2"/>
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2"/>