Update dependency NuGet.Protocol to 6.12.1 (#1354)

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

Author: renovate[bot]

Directory.Packages.props

@@ -27,7 +27,7 @@
     <PackageVersion Include="Microsoft.Windows.SDK.Win32Docs" Version="$(ApiDocsVersion)" />
     <PackageVersion Include="Microsoft.Windows.SDK.Win32Metadata" Version="$(MetadataVersion)" />
     <PackageVersion Include="Microsoft.Windows.WDK.Win32Metadata" Version="$(WDKMetadataVersion)" />
-    <PackageVersion Include="NuGet.Protocol" Version="6.10.0" />
+    <PackageVersion Include="NuGet.Protocol" Version="6.12.1" />
     <PackageVersion Include="System.Collections.Immutable" Version="8.0.0" />
     <PackageVersion Include="System.Memory" Version="4.6.0" />
     <PackageVersion Include="System.Reflection.Metadata" Version="8.0.1" />