Use literal string interpolation in integrations R-S (f-strings) (#26392)

homeassistant/components/startca/sensor.py

@@ -86,7 +86,7 @@ class StartcaSensor(Entity):
     @property
     def name(self):
         """Return the name of the sensor."""
-        return "{} {}".format(self.client_name, self._name)
+        return f"{self.client_name} {self._name}"
 
     @property
     def state(self):