chore(slack): Bearer token inside HTTP headers

* Slack provider: Works with Bearer token inside HTTP headers instead of params
# Deprecating usage of token as a query string parameter in Web API requests: Apps created after February 24, 2021 may no longer send tokens as query parameters and must instead use an HTTP authorization header or send the token in an HTTP POST body.

* fix: (slack provider) add Bearer token

AUTHORS

@@ -56,6 +56,7 @@ Fred Palmer
 Fábio Santos
 George Whewell
 Griffith Rees
+Guignard Javier
 Guilhem Saurel
 Guillaume Vincent
 Guoyu Hao

allauth/socialaccount/providers/slack/views.py

@@ -23,7 +23,8 @@ def complete_login(self, request, app, token, **kwargs):
 
     def get_data(self, token):
         # Verify the user first
-        resp = requests.get(self.identity_url, params={"token": token})
+        hed = {'Authorization': 'Bearer ' + token}
+        resp = requests.get(self.identity_url, headers=hed)
         resp = resp.json()
 
         if not resp.get("ok"):