Fix condition for skipping safety test on Python 3.12.

[sT331h0rs3]

Condition, introduced in 398390e, allows to skip the safety test in Python 3.11 as well, though surely meant for 3.12 only.
Let me show the difference in REPL output:

Python 3.11.14 (main, Feb  4 2026, 20:23:03) [GCC 14.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.version_info
sys.version_info(major=3, minor=11, micro=14, releaselevel='final', serial=0)
>>> (3, 11) < sys.version_info < (3, 13)
True
>>> (3, 12) <= sys.version_info < (3, 13)
False

Python 3.12.12 (main, Jan 16 2026, 00:00:00) [GCC 14.3.1 20250617 (Red Hat 14.3.1-2)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.version_info
sys.version_info(major=3, minor=12, micro=12, releaselevel='final', serial=0)
>>> (3, 11) < sys.version_info < (3, 13)
True
>>> (3, 12) <= sys.version_info < (3, 13)
True

The safety test successfully passes on Python 3.11.