package/python3: security bump version to 3.13.11

Release notes:
https://www.python.org/downloads/release/python-31311/
https://docs.python.org/release/3.13.11/whatsnew/changelog.html

Fixes:
https://www.cve.org/CVERecord?id=CVE-2025-12084
https://www.cve.org/CVERecord?id=CVE-2025-13836

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
[Julien:
 - add link to detailed change log
 - add CVE-2025-13836 in commit log
]
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 8745e0d5ca39abbbb664619e1512420c40bcd732)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>