Bump System.Security.AccessControl from 5.0.0 to 6.0.0 (#885)

Bumps [System.Security.AccessControl](https://github.com/dotnet/runtime) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/compare/v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: System.Security.AccessControl
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

src/WinSW.Core/WinSW.Core.csproj

@@ -17,7 +17,7 @@
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net6.0-windows'">
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageReference Include="System.Security.AccessControl" Version="5.0.0" />
+    <PackageReference Include="System.Security.AccessControl" Version="6.0.0" />
     <PackageReference Include="System.ServiceProcess.ServiceController" Version="5.0.0" />
   </ItemGroup>