chore: Bump version to 2026.5.11

Includes H5058/H5043 leak-sensor support (#56), MQTT thermometer fix
(#83), temperature-unit + group-device docs (#85, #70).

Author: Tom Lasswell

custom_components/govee/manifest.json

@@ -24,5 +24,5 @@
     "bleak-retry-connector>=3.0.0",
     "cryptography>=41.0.0"
   ],
-  "version": "2026.5.10"
+  "version": "2026.5.11"
 }