Upgrade download-artifact action to version 4

Author: adenot

.github/workflows/registry.yml

@@ -43,7 +43,7 @@ jobs:
         id: get_tag
         run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
       - name: Download docker artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: serverless
           path: /tmp
@@ -78,7 +78,7 @@ jobs:
         id: get_tag
         run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
       - name: Download artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: serverless
           path: /tmp
@@ -110,7 +110,7 @@ jobs:
         id: get_tag
         run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
       - name: Download artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: serverless
           path: /tmp