opentoonz: update hashsum of 1.4.0 tarball

Summary:
Updated hash of the release tarball (don't know what was changed).
Depends on D9844.

Test Plan: Drew some frames, created a simple animation from them and exported it as H264 video.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D9845