Add typing stubs dependencies for mypy>0.900

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Migrated from D5833 (view on Phabricator)

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Patch application report for D5833 (id=20861)

Rebasing onto 4cd50e66...

Current branch diff-target is up to date.

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commit 6cdd424eba011162b20bbb1ca4f05dd9ab6163a5
Author: David Douard <david.douard@sdfa3.org>
Date:   Wed Jun 9 11:21:33 2021 +0200

    Add typing stubs dependencies for mypy>0.900

See https://jenkins.softwareheritage.org/job/DPROV/job/tests-on-diff/97/ for more details.

Merge request was merged

closed

Thanks ;)