Bump coverlet.msbuild from 6.0.3 to 6.0.4 (#1087)

Bumps [coverlet.msbuild](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.msbuild
  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

@@ -4,7 +4,7 @@
     <GlobalPackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
-    <PackageVersion Include="coverlet.msbuild" Version="6.0.3" />
+    <PackageVersion Include="coverlet.msbuild" Version="6.0.4" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageVersion Include="Humanizer" Version="2.14.1" />
     <PackageVersion Include="MartinCostello.Logging.XUnit.v3" Version="0.5.1" />