Local already does allow for plugins to automatically be available when they are within the wp-content/plugins folder, it looks like you might be experiencing a specific issue with this specific machine. Because of that, I’m moving this topic from the “Feature Requests” category into the “Support” category.
I think that might refer to some outdated certificates within the computer’s certificate chain. You might take a look at this topic where the user solved a similar issue by downloading and referencing a more up-to-date collection of those certificates: