[python-committers] Created a Bedevere bot account on GitHub

Just so no one thinks anything fishy is going on, I wanted to let the team know that I created https://github.com/bedevere-bot and now have Bedevere using this account instead of piggybacking off of https://github.com/the-knights-who-say-ni. I figured they should be separate for security reasons as the Ni bot accesses many more accounts than Bedevere. Plus I wanted an appropriate profile photo for Bedevere. :)

P.S. In case anyone cares, core-workflow-owner@ is set up as the email address for both accounts, so the accounts can be recovered by others if need be.