python3: upgrade to release 3.8.13
Remove some code in external/python3/darwin.patch.0 as it was fixed upstream(https://bugs.python.org/issue45405).
Change-Id: Ie6bfb2456f96a63adbf0dbcb9c902dc56f1151ee
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/139493
Tested-by: Jenkins
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit
c8fd50f9ec02a131fd4c99e80f7252b49015653a)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/139564
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>