Fixed Maintenance Process for Feedstock Teams

We have fixed a bug where the maintainers of feedstocks listed in the meta.yaml did not match those listed in the GitHub team. Due to this change, you may notice emails from GitHub informing you that you have been removed from a GitHub team if you have recently removed yourself from a feedstock via changing the meta.yaml. A similar fix has been applied for maintenance teams as well, though you will not see emails from this fix.