Standardize import step variable name in cert_expiry (#124696)

homeassistant/components/cert_expiry/config_flow.py

@@ -95,12 +95,9 @@ class CertexpiryConfigFlow(ConfigFlow, domain=DOMAIN):
             errors=self._errors,
         )
 
-    async def async_step_import(
-        self,
-        user_input: Mapping[str, Any] | None = None,
-    ) -> ConfigFlowResult:
+    async def async_step_import(self, import_data: dict[str, Any]) -> ConfigFlowResult:
         """Import a config entry.
 
         Only host was required in the yaml file all other fields are optional
         """
-        return await self.async_step_user(user_input)
+        return await self.async_step_user(import_data)