fix NameError

Traceback (most recent call last):
100
  File "/home/runner/work/spyder/spyder/spyder/plugins/completion/languageserver/plugin.py", line 400, in <lambda>
101
    timer.timeout.connect(lambda ls=self: ls.check_heartbeat(language))
102
NameError: free variable 'language' referenced before assignment in enclosing scope

spyder/plugins/completion/languageserver/plugin.py

@@ -397,7 +397,9 @@ def start_client(self, language):
             timer = QTimer(self)
             self.clients_hearbeat[language] = timer
             timer.setInterval(self.TIME_HEARTBEAT)
-            timer.timeout.connect(lambda ls=self: ls.check_heartbeat(language))
+            timer.timeout.connect(
+                lambda ls=self, language=language: ls.check_heartbeat(
+                    language))
             timer.start()
 
             if language_client['status'] == self.STOPPED: