Update GitHub Actions to use upload-artifact@v4

Author: Mteheran

.github/workflows/main_apicolombia.yml

@@ -32,7 +32,7 @@ jobs:
         run: dotnet publish -c Release -o ${{env.DOTNET_ROOT}}/myapp
 
       - name: Upload artifact for deployment job
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: .net-app
           path: ${{env.DOTNET_ROOT}}/myapp