Update nbgv's NuGet dependency to 5.11.0

Fixes #588

Author: AArnott

src/nbgv/Program.cs

@@ -773,7 +773,7 @@ private static async Task<string> GetLatestPackageVersionAsync(string packageId,
             var providers = new List<Lazy<INuGetResourceProvider>>();
             providers.AddRange(Repository.Provider.GetCoreV3());  // Add v3 API support
 
-            var sourceRepositoryProvider = new SourceRepositoryProvider(settings, providers);
+            var sourceRepositoryProvider = new SourceRepositoryProvider(new PackageSourceProvider(settings), providers);
 
             // Select package sources based on NuGet.Config files or given options, as 'nuget.exe restore' command does
             // See also 'DownloadCommandBase.GetPackageSources(ISettings)' at https://github.com/NuGet/NuGet.Client/blob/dev/src/NuGet.Clients/NuGet.CommandLine/Commands/DownloadCommandBase.cs

src/nbgv/nbgv.csproj

@@ -10,8 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="NuGet.PackageManagement" Version="4.9.3" NoWarn="NU1701" />
-    <PackageReference Include="NuGet.Resolver" Version="4.9.3" />
+    <PackageReference Include="NuGet.PackageManagement" Version="5.11.0" />
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.20574.7" />
     <PackageReference Include="Nerdbank.GitVersioning.LKG" Version="3.4.173-alpha" PrivateAssets="all" />
     <PackageReference Include="System.Diagnostics.Tools" Version="4.3.0" />