Update protonmail-bridge to v2.1.1

Summary:
Updates to the latest version. Closes T10171.

Summarized changelog:

• 2.1.1
  • Remove message from DB once it is not on server any more
• 2.1.0
  • Comment or mitigate panics, unlock cache when needed
  • Always turn off non-encrypted recipient report
• 2.0.1
  • New GUI style and improved UX
  • Caching encrypted full body messages on disk

Full changelog: https://protonmail.com/download/bridge/stable_releases.html

Test Plan: Sent and received mail through thunderbird.

Reviewers: Triage Team, algent

Reviewed By: Triage Team, algent

Subscribers: algent

Maniphest Tasks: T10171

Differential Revision: https://dev.getsol.us/D13072