py2/py3: hmac.new() requires digestmod argument from Python 3.8.

bt5/erp5_bearer_token/ExtensionTemplateItem/portal_components/extension.erp5.BearerToken.py

+import hashlib
 import hmac
 from Products.ERP5Type.Cache import DEFAULT_CACHE_SCOPE
 
 CACHE_FACTORY_NAME = 'bearer_token_cache_factory'
 
 def getHMAC(self, key, body):
-  digest = hmac.new(key, body)
+  digest = hmac.new(key, body, digestmod=hashlib.md5)
   return digest.hexdigest()
 
 def _getCacheFactory(self, cache_factory_name):