Update python-regex to 2020.11.11
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New version of python-regex is required by python-black, which is a new dependency of spyder3 version 4.2.0.
Signed-off-by: Algent Albrahimi <email@example.com>
Test Plan: Run calibre and spyder3.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D9985