fix(test): Await file writes in Handelsregister tests to ensure all downloads complete before test end

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@fin.cx/opendata',
-  version: '1.5.2',
+  version: '1.5.3',
   description: 'A comprehensive TypeScript library that manages open business data for German companies by integrating MongoDB, processing JSONL bulk data, and automating browser interactions for Handelsregister data retrieval.'
 }