Bracket pymodbus version used for github actions pipeline.

tjhowse · tjhowse · commit 7f7a3f23476c · 2023-06-16T21:13:31.000+10:00
diff --git a/requirements.txt b/requirements.txt
@@ -2,5 +2,5 @@ setuptools
 ruamel.yaml>=0.16.12
 click
 paho-mqtt
-pymodbus
+pymodbus>=2.3.0,<3.0.0
 SungrowModbusTcpClient>=0.1.6
