main: Remove Discord webhooks if they are not authenticated

This fixes an issue with slixmpp > 1.7.1

setup.py

@@ -9,10 +9,10 @@ setup(
     license = "GPLc3",
     packages = find_packages(),
     install_requires = [
-        "requests>=2.26.0",
+        "requests==2.27.1",
-        "slixmpp>=1.7.1",
+        "slixmpp==1.7.1",
         "nextcord",
-        "toml>=0.10.2"
+        "toml==0.10.2"
     ],
     extra_require = {
         "dev": [

xmpp_discord_bridge/main.py

@@ -206,6 +206,10 @@ class BridgeComponent(ComponentXMPP):
             wh = None
             for webhook in await dchannel.webhooks():
                 if webhook.name == "discord-xmpp-bridge":
+                    if not webhook.is_authenticated():
+                        _logger.info("Webhook for %s has no token. Deleting and recreating" % muc)
+                        await webhook.delete(reason="Webhook has no token. Will recreate")
+                    else:
                         wh = webhook
                     break
             if not wh:
@@ -526,7 +530,15 @@ def main():
                            general["port"],
                            general["discord_token"],
                            config)
-    for xep in [ "0030", "0199", "0045", "0084", "0153", "0054", "0060" ]:
+    for xep in [
+            "0030",
+            "0199",
+            "0045",
+            "0084",
+            "0153",
+            "0054",
+            "0060"
+    ]:
         xmpp.register_plugin(f"xep_{xep}")
 
     logging.basicConfig(stream=sys.stdout, level=verbosity)