Add step to install system dependencies on Alpine Linux

Author: mattt

.github/workflows/ci.yml

@@ -80,6 +80,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install system dependencies
+        run: apk add --no-cache bash curl jq
+
       - name: Setup Swift
         uses: vapor/[email protected]
         with: