Bump NuGet.ProjectModel from 6.13.1 to 6.14.0

---
updated-dependencies:
- dependency-name: NuGet.ProjectModel
  dependency-version: 6.14.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -12,7 +12,7 @@
     <PackageVersion Include="NuGetizer" Version="1.4.6" />
     <PackageVersion Include="Microsoft.Extensions.DependencyModel" Version="8.0.2" />
     <PackageVersion Include="Microsoft.Playwright" Version="1.50.0" />
-    <PackageVersion Include="NuGet.ProjectModel" Version="6.13.1" />
+    <PackageVersion Include="NuGet.ProjectModel" Version="6.14.0" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" />
     <PackageVersion Include="Devlooped.SponsorLink" Version="1.1.0" />