fix: ensure zip is installed before building distribution package

.github/workflows/release.yml

@@ -101,6 +101,11 @@ jobs:
         if: steps.tagcheck.outputs.exists == 'false'
         id: package
         run: |
+          if ! command -v zip >/dev/null 2>&1; then
+            sudo apt-get update -y
+            sudo apt-get install -y zip
+          fi
+
           VERSION="${{ steps.meta.outputs.version }}"
           SLUG="siti-ai-product-content-generator"
           BUILD_ROOT="$RUNNER_TEMP/build"