Bump NuGet.ProjectModel 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
- 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/NuGetPackageChecker/NuGetPackageChecker.csproj

@@ -24,12 +24,12 @@
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
     <PackageReference Include="NuGet.Versioning" Version="6.12.1" PrivateAssets="All" /> <!--Part of the SDK-->
-    <PackageReference Include="NuGet.ProjectModel" Version="6.12.1" PrivateAssets="All" /> <!--Part of the SDK-->
+    <PackageReference Include="NuGet.ProjectModel" Version="6.14.0" PrivateAssets="All" /> <!--Part of the SDK-->
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp3.1'">
     <PackageReference Include="NuGet.Versioning" Version="6.12.1" PrivateAssets="All" /> <!--Part of the SDK-->
-    <PackageReference Include="NuGet.ProjectModel" Version="6.12.1" PrivateAssets="All" /> <!--Part of the SDK-->
+    <PackageReference Include="NuGet.ProjectModel" Version="6.14.0" PrivateAssets="All" /> <!--Part of the SDK-->
   </ItemGroup>
 
   <ItemGroup>

tests/NuGetPackageChecker.Tests/NuGetPackageChecker.Tests.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="FluentAssertions" Version="7.0.0" />
     <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.12.6" PrivateAssets="All" />
     <PackageReference Include="NuGet.Versioning" Version="6.12.1" PrivateAssets="All" />
-    <PackageReference Include="NuGet.ProjectModel" Version="6.12.1" PrivateAssets="All" />
+    <PackageReference Include="NuGet.ProjectModel" Version="6.14.0" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>