Bump NSubstitute from 5.3.0 to 6.0.0

---
updated-dependencies:
- dependency-name: NSubstitute
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -13,7 +13,7 @@
 		<PackageVersion Include="xunit" Version="2.9.2" />
 		<PackageVersion Include="xunit.runner.visualstudio" Version="3.1.0" />
 		<PackageVersion Include="FluentAssertions" Version="7.2.2" />
-		<PackageVersion Include="NSubstitute" Version="5.3.0" />
+		<PackageVersion Include="NSubstitute" Version="6.0.0" />
 		<PackageVersion Include="Verify.MSTest" Version="31.21.0" />
 	</ItemGroup>