Add updater.json for Firefly III FINTS importer

fireflyiii_fints_importer/updater.json

@@ -0,0 +1,9 @@
+{
+  "dockerhub_by_date": "true",
+  "last_update": "20-09-2025",
+  "repository": "alexbelgium/hassio-addons",
+  "slug": "fireflyiii_data_importer",
+  "source": "dockerhub",
+  "upstream_repo": "benkl/firefly-iii-fints-importer",
+  "upstream_version": "1.3.0"
+}