build(deps): bump coverlet.collector from 6.0.3 to 6.0.4

Bumps [coverlet.collector](https://github.com/coverlet-coverage/coverlet) from 6.0.3 to 6.0.4.
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](coverlet-coverage/coverlet@v6.0.3...v6.0.4)

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

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

Author: dependabot[bot]

src/ZNotify.Test/ZNotify.Test.csproj

@@ -14,7 +14,7 @@
         <PackageReference Include="NUnit" Version="4.3.2" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
         <PackageReference Include="NUnit.Analyzers" Version="4.5.0" />
-        <PackageReference Include="coverlet.collector" Version="6.0.3" />
+        <PackageReference Include="coverlet.collector" Version="6.0.4" />
     </ItemGroup>
 
     <ItemGroup>