SOLUTION IN https://github.com/pulp/pulpcore/pull/3146/files

Describe the bug
I tried to use an env_var to merge a dictionary, but it has the key '' which is not able to work, although I expected it to work.

To Reproduce
I tried to set this variable:

PULP_LOGGING={'dynaconf_merge': True, 'loggers': {'': {'handlers': ['console'], 'level': 'DEBUG'}}}

Expected behavior
I expected it to merge, but it does not. When showing the effective config with dynaconf list I see it is not merged as expected.