Bump plexapi from 4.15.0 to 4.15.4 (#2175)

* Bump plexapi from 4.15.0 to 4.15.4

Bumps [plexapi](https://github.com/pkkid/python-plexapi) from 4.15.0 to 4.15.4.
- [Release notes](https://github.com/pkkid/python-plexapi/releases)
- [Commits](https://github.com/pkkid/python-plexapi/compare/4.15.0...4.15.4)

---
updated-dependencies:
- dependency-name: plexapi
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update plexapi==4.15.4

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/plexapi/alert.py

@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 import json
+import socket
+from typing import Callable
 import threading
 
 from plexapi import log
@@ -32,15 +34,17 @@ class AlertListener(threading.Thread):
             callbackError (func): Callback function to call on errors. The callback function
                 will be sent a single argument 'error' which will contain the Error object.
                 :samp:`def my_callback(error): ...`
+            ws_socket (socket): Socket to use for the connection. If not specified, a new socket will be created.
     """
     key = '/:/websockets/notifications'
 
-    def __init__(self, server, callback=None, callbackError=None):
+    def __init__(self, server, callback: Callable = None, callbackError: Callable = None, ws_socket: socket = None):
         super(AlertListener, self).__init__()
         self.daemon = True
         self._server = server
         self._callback = callback
         self._callbackError = callbackError
+        self._socket = ws_socket
         self._ws = None
 
     def run(self):
@@ -52,8 +56,9 @@ class AlertListener(threading.Thread):
         # create the websocket connection
         url = self._server.url(self.key, includeToken=True).replace('http', 'ws')
         log.info('Starting AlertListener: %s', url)
-        self._ws = websocket.WebSocketApp(url, on_message=self._onMessage,
-                                          on_error=self._onError)
+
+        self._ws = websocket.WebSocketApp(url, on_message=self._onMessage, on_error=self._onError, socket=self._socket)
+
         self._ws.run_forever()
 
     def stop(self):
@@ -66,10 +71,8 @@ class AlertListener(threading.Thread):
 
     def _onMessage(self, *args):
         """ Called when websocket message is received.
-            In earlier releases, websocket-client returned a tuple of two parameters: a websocket.app.WebSocketApp
-            object and the message as a STR. Current releases appear to only return the message.
+
             We are assuming the last argument in the tuple is the message.
-            This is to support compatibility with current and previous releases of websocket-client.
         """
         message = args[-1]
         try:
@@ -82,10 +85,8 @@ class AlertListener(threading.Thread):
 
     def _onError(self, *args):  # pragma: no cover
         """ Called when websocket error is received.
-            In earlier releases, websocket-client returned a tuple of two parameters: a websocket.app.WebSocketApp
-            object and the error. Current releases appear to only return the error.
+
             We are assuming the last argument in the tuple is the message.
-            This is to support compatibility with current and previous releases of websocket-client.
         """
         err = args[-1]
         try: