Bump uSync from 13.0.0-rc2 to 13.1.2

Bumps [uSync](https://github.com/KevinJump/uSync) from 13.0.0-rc2 to 13.1.2.
- [Release notes](https://github.com/KevinJump/uSync/releases)
- [Commits](https://github.com/KevinJump/uSync/commits/v13.1.2)

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

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

Author: dependabot[bot]

test/UrlTracker.Resources.Website/UrlTracker.Resources.Website.csproj

@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
     <PackageReference Include="Umbraco.Cms" Version="13.0.0" />
-    <PackageReference Include="uSync" Version="13.0.0-rc2" />
+    <PackageReference Include="uSync" Version="13.1.2" />
   </ItemGroup>
 
   <Import Project="..\..\src\UrlTracker.Backoffice.UI\build\UrlTracker.Backoffice.UI.targets" />