Merge pull request #889 from ocaml/better-opam-cache-clean

More aggressive opam clean

Author: smorimoto

dist/index.js

@@ -209,6 +209,7 @@ export async function saveOpamCache() {
       "--download-cache",
       "--logs",
       "--repo-cache",
+      "--untracked",
       "--unused-repositories",
     ]);
     const { key } = await composeOpamCacheKeys();