Update qgis to 3.10.2

Summary:
Changelog available here

Signed-off-by: Pierre-Yves <pyu@riseup.net>

Test Plan: Launch app, try a couple of plugins

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D8080

Former-commit-id: R2726:eeaecb6b8dd3