chore(deps): update dependency gitversion.tool to 6.8.0 (#1781)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Directory.Packages.props

@@ -23,7 +23,7 @@
     <PackageVersion Include="System.Threading.Tasks" Version="4.3.0" />
   </ItemGroup>
   <ItemGroup>
-    <PackageVersion Include="GitVersion.Tool" Version="6.7.0" />
+    <PackageVersion Include="GitVersion.Tool" Version="6.8.0" />
     <PackageVersion Include="JetBrains.ReSharper.CommandLineTools" Version="2025.2.6" />
     <PackageVersion Include="ReportGenerator" Version="5.5.10" />
     <PackageVersion Include="Rocket.Surgery.Nuke" Version="2.9.12" />