Update _config.py
Update _config.py

Shadowserver parser config update to fix the error when parsing due to existing configuration on the config file, shadow server added some new feeds, so when trying to parse them the bot stops because the configuration does not exit yet on the current config, so, this update is to add the missing configuration.

closes certtools/intelmq#2060

Co-Authored by Sebastian Wagner <wagner@cert.at>

certtools/intelmq,certtools/intelmq,aaronkaplan/intelmq,aaronkaplan/intelmq,certtools/intelmq,aaronkaplan/intelmq