[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

plugwise/helper.py

@@ -1304,7 +1304,7 @@ def _preset(self, loc_id: str) -> str | None:
         locator = "./rule[active='true']/directives/when/then"
         if (
             active_rule := self._domain_objects.find(locator)
-        ) is None or "icon" not in active_rule.keys():
+        ) is None or "icon" not in active_rule:
             return None
         return str(active_rule.attrib["icon"])