Bump version from v8.47.3 to v8.47.4

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: springfall2008

apps/predbat/predbat.py

@@ -35,7 +35,7 @@
 import pytz
 import asyncio
 
-THIS_VERSION = "v8.47.3"
+THIS_VERSION = "v8.47.4"
 
 from download import predbat_update_move, predbat_update_download, check_install, DEFAULT_PREDBAT_REPOSITORY
 from const import MINUTE_WATT