Early exit from cache save (#26)

- **Update deps**
- **Early exit in cache save**
- **Rebuild action**

Author: maciektr

dist/cache-save/index.js

@@ -19,8 +19,17 @@ async function saveCache() {
     } else {
       core.info(`Cache hit occurred, not saving cache.`);
     }
+
+    // node will stay alive if any promises are not resolved,
+    // which is a possibility if HTTP requests are dangling
+    // due to retries or timeouts. We know that if we got here
+    // that all promises that we care about have successfully
+    // resolved, so simply exit with success.
+    process.exit(0);
   } catch (e) {
     core.error(e);
+    // vide supra
+    process.exit(1);
   }
 }