refactor: remove top-level await

Author: anonrig

lib/index.js

@@ -1,13 +1,12 @@
 import core from '@actions/core'
 import { apply_patch } from "./runner.js";
 
-try {
-  const base_path = core.getInput('base_file_path');
-  const patch_path = core.getInput('patch_file_path');
-  const output_path = core.getInput('output_file_path');
-
-  await apply_patch(base_path, patch_path, output_path);
-} catch (error) {
-  core.setFailed(error);
-}
+const base_path = core.getInput('base_file_path');
+const patch_path = core.getInput('patch_file_path');
+const output_path = core.getInput('output_file_path');
+
+apply_patch(base_path, patch_path, output_path)
+  .then(() => core.setOutput('state', 'success'))
+  .catch(error => core.setFailed(error))
+