ci: fix docker build args format

.github/workflows/build.yml

@@ -471,9 +471,9 @@ jobs:
           VERSION: ${{ needs.get-release.outputs.version }}
         with:
           push: ${{ github.event.inputs.test == 'true' && 'false' || 'true' }}
-          build-args:
-            - VERSION: ${{ env.VERSION }}
-            - IN_DOCKER: true
+          build-args: |
+            VERSION=${{ env.VERSION }}
+            IN_DOCKER=true
           platforms: |
             linux/386
             linux/amd64