Update nuget/setup-nuget action to v4

Author: renovate[bot]

.github/workflows/build-plugin.yaml

@@ -23,7 +23,7 @@ jobs:
     - name: Add msbuild to PATH
       uses: microsoft/setup-msbuild@v1.0.2
 
-    - uses: nuget/setup-nuget@v1
+    - uses: nuget/setup-nuget@v4
 
     - run: nuget restore