fix: ci change actions/download-artifact to v3

Author: Linbreux

.github/workflows/docker.yml

@@ -65,7 +65,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Download artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: wikmd
           path: /tmp