Use custom nuget action

.github/actions/setup-nuget/README.md

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+# Custom Setup-NuGet
+Local copy of https://github.com/NuGet/setup-nuget because that uses Node16 and doesnt look like it will be updated soon.

.github/actions/setup-nuget/action.yml

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+name: 'Setup NuGet.exe for use with actions'
+description: 'Official NuGet.exe setup action that supports cross-platform installation of specific NuGet.exe versions.'
+author: 'Microsoft'
+inputs:
+  nuget-version:
+    description: 'NuGet version to install. Can be `latest`, `preview`, a concrete version like `5.3.1`, or a semver range specifier like `5.x`.'
+    default: 'latest'
+  nuget-api-key:
+    description: 'NuGet API Key to configure.'
+  nuget-api-key-source:
+    description: 'Source to scope the NuGet API Key to.'
+runs:
+  using: 'node16'
+  main: 'dist/index.js'
+branding:
+  icon: package
+  color: blue