Cleanup with ruff check (#963)

* Implement improvements suggested by ruff check.

* Add ruff check to CI.

* Add changelog fragment.

plugins/modules/luks_device.py

@@ -936,9 +936,7 @@ class ConditionsHandler(Handler):
 
         name = self.opened_luks_name(self.device)
 
-        if name is None:
-            return True
-        return False
+        return name is None
 
     def luks_close(self) -> bool:
         if (