Fix typo in Authorizaton header: Berarer -> Bearer (#8498)

Co-authored-by: Giovanni Allegri <giohappy@gmail.com>

geonode/thumbs/utils.py

@@ -214,7 +214,7 @@ def get_map(
             encoded_credentials = base64.b64encode(f"{_user}:{_pwd}".encode("UTF-8")).decode("ascii")
             headers["Authorization"] = f"Basic {encoded_credentials}"
         else:
-            headers["Authorization"] = f"Berarer {additional_kwargs['access_token']}"
+            headers["Authorization"] = f"Bearer {additional_kwargs['access_token']}"
 
     wms = WebMapService(f"{thumbnail_url}{wms_endpoint}", version=wms_version, headers=headers)