Update requirements.txt
Update requirements.txt

* updates PyBrowserID to 0.9.1
* adds a few new requirements because pip freeze said so

willkg/standup,mozilla/standup,safwanrahman/standup,rehandalal/standup,safwanrahman/standup,rehandalal/standup,willkg/standup,willkg/standup,rehandalal/standup,rlr/standup,safwanrahman/standup,mozilla/standup,mozilla/standup,willkg/standup,mozilla/standup,rlr/standup,safwanrahman/standup,rlr/standup