Update Keybase to 4.4.1

Summary:
Update Keybase to 4.4.1

Fixes bugs connected to loading chat conversations and payments

Test Plan: Sent a few messages, uploaded a file, checked my wallet balance

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D7139