[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

lib/config_util.py

@@ -271,7 +271,7 @@ def update(data, update_data, overwrite=True):
  if value is None:
  if key in data:
  del data[key]
- elif isinstance(value, collections.Mapping):
+ elif isinstance(value, collections.abc.Mapping):
  sub_data = data.get(key, {})
  if sub_data is not None:
  data[key] = update(sub_data, value, overwrite)