Bump NuGet.ProjectModel from 6.11.1 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] <support@github.com>

Author: dependabot[bot]

src/Microsoft.Sbom.Api/Microsoft.Sbom.Api.csproj

@@ -48,6 +48,7 @@
 
     <ItemGroup>
       <PackageReference Include="NuGet.Frameworks" VersionOverride="6.14.0" />
+      <PackageReference Include="NuGet.ProjectModel" VersionOverride="6.14.0" />
       <ProjectReference Include="..\Microsoft.Sbom.Adapters\Microsoft.Sbom.Adapters.csproj" />
       <ProjectReference Include="..\Microsoft.Sbom.Common\Microsoft.Sbom.Common.csproj" />
       <ProjectReference Include="..\Microsoft.Sbom.Contracts\Microsoft.Sbom.Contracts.csproj" />