Update actions/download-artifact action to v4

Author: renovate[bot]

.github/workflows/publish.yml

@@ -120,13 +120,13 @@ jobs:
       run: dotnet --info
 
     - name: Download Madness.nupkg artifact from windows-latest
-      uses: actions/download-artifact@v3.0.2
+      uses: actions/download-artifact@v4.0.0
       with:
         name: windows-latest_Madness.nupkg
         path: out
 
     - name: Download Madness.snupkg artifact from windows-latest
-      uses: actions/download-artifact@v3.0.2
+      uses: actions/download-artifact@v4.0.0
       with:
         name: windows-latest_Madness.snupkg
         path: out