ci: Set default

Author: rschristian

action.yml

@@ -19,6 +19,7 @@ inputs:
     default: 'build'
   compression:
     description: 'The compression algorithm to use: "gzip" or "brotli"'
+    default: 'gzip'
   show-total:
     description: 'Show total size and difference.'
     default: 'true'