Revert "Bump pyotgw to 0.4b0 (#19618)" (#19635)

This reverts commit dae4543e.
There's a bug in the new version of the library that may cause 100% CPU usage, rendering Home Assistant unresponsive.

homeassistant/components/opentherm_gw/__init__.py

@@ -104,7 +104,7 @@ CONFIG_SCHEMA = vol.Schema({
     }),
 }, extra=vol.ALLOW_EXTRA)
 
-REQUIREMENTS = ['pyotgw==0.4b0']
+REQUIREMENTS = ['pyotgw==0.3b1']
 
 _LOGGER = logging.getLogger(__name__)
 

requirements_all.txt

@@ -1132,7 +1132,7 @@ pyoppleio==1.0.5
 pyota==2.0.5
 
 # homeassistant.components.opentherm_gw
-pyotgw==0.4b0
+pyotgw==0.3b1
 
 # homeassistant.auth.mfa_modules.notify
 # homeassistant.auth.mfa_modules.totp