Update dependency NuGet.ProjectModel to 6.14.0 (#1832)

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

Author: renovate[bot]

Directory.Packages.props

@@ -36,7 +36,7 @@
         <PackageVersion Include="Nuke.Common" Version="9.0.4" />
         <PackageVersion Include="ReportGenerator" Version="5.4.12" />
         <PackageVersion Include="Rocket.Surgery.Nuke" Version="2.9.11" />
-        <PackageVersion Include="NuGet.ProjectModel" Version="6.13.2" />
+        <PackageVersion Include="NuGet.ProjectModel" Version="6.14.0" />
 
         <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.11.0" />
         <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.11.0" />