Update python-qtconsole to 5.0.3

Summary:
Version 5.0.3 of python-qtconsole is a mandatory dependency for spyder3 version 4.2.5.

Changelog:

• Emit kernel_restarted signal only after a kernel crash.

Signed-off-by: Algent Albrahimi <algent@protonmail.com>

Test Plan: Run a few python scripts in spyder3.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D10792