ci: update download-artifact action

Author: angristan

.github/workflows/push.yml

@@ -10,11 +10,11 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.16'
+          go-version: "1.16"
       - name: Run build
         run: go build .
       - name: upload artifact of build output
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: build
           path: worker
@@ -26,7 +26,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.16'
+          go-version: "1.16"
       - name: Run go vet
         run: go vet .
 
@@ -49,7 +49,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Download build artifact
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: build
           path: .