build(deps): Bump Xunit.Combinatorial from 1.4.1 to 1.5.25

Bumps [Xunit.Combinatorial](https://github.com/AArnott/Xunit.Combinatorial) from 1.4.1 to 1.5.25.
- [Release notes](https://github.com/AArnott/Xunit.Combinatorial/releases)
- [Commits](AArnott/Xunit.Combinatorial@v1.4.1...v1.5.25)

---
updated-dependencies:
- dependency-name: Xunit.Combinatorial
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tests/Directory.Build.props

@@ -20,7 +20,7 @@
     <PackageReference Include="Moq" Version="4.18.2" />
 		<PackageReference Include="Shouldly" Version="4.1.0" />
 		<PackageReference Include="xunit" Version="2.4.2" />
-		<PackageReference Include="Xunit.Combinatorial" Version="1.4.1" />
+		<PackageReference Include="Xunit.Combinatorial" Version="1.5.25" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="All" />
 		<PackageReference Include="coverlet.msbuild" Version="3.1.2" PrivateAssets="All" />
 	</ItemGroup>