Add support for Python 3.12.12, 3.11.14, 3.10.19, 3.9.24 (#1929)

Changelogs:
https://docs.python.org/release/3.12.12/whatsnew/changelog.html#python-3-12-12-final
https://docs.python.org/release/3.11.14/whatsnew/changelog.html#python-3-11-14-final
https://docs.python.org/release/3.10.19/whatsnew/changelog.html#python-3-10-19-final
https://docs.python.org/release/3.9.24/whatsnew/changelog.html#python-3-9-24-final

Binary builds:
https://github.com/heroku/heroku-buildpack-python/actions/runs/18379078616
https://github.com/heroku/heroku-buildpack-python/actions/runs/18383971694
https://github.com/heroku/heroku-buildpack-python/actions/runs/18383611414
https://github.com/heroku/heroku-buildpack-python/actions/runs/18383614298

GUS-W-19859395.

Author: edmorley

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - Added support for Python 3.14. ([#1927](https://github.com/heroku/heroku-buildpack-python/pull/1927))
 - The Python 3.13 version alias now resolves to Python 3.13.8. ([#1928](https://github.com/heroku/heroku-buildpack-python/pull/1928))
+- The Python 3.12 version alias now resolves to Python 3.12.12. ([#1929](https://github.com/heroku/heroku-buildpack-python/pull/1929))
+- The Python 3.11 version alias now resolves to Python 3.11.14. ([#1929](https://github.com/heroku/heroku-buildpack-python/pull/1929))
+- The Python 3.10 version alias now resolves to Python 3.10.19. ([#1929](https://github.com/heroku/heroku-buildpack-python/pull/1929))
+- The Python 3.9 version alias now resolves to Python 3.9.24. ([#1929](https://github.com/heroku/heroku-buildpack-python/pull/1929))
 - Stopped using `--with-system-expat` when compiling new Python versions. ([#1925](https://github.com/heroku/heroku-buildpack-python/pull/1925))
 
 ## [v312] - 2025-10-05

lib/python_version.sh

@@ -4,10 +4,10 @@
 # however, it helps Shellcheck realise the options under which these functions will run.
 set -euo pipefail
 
-LATEST_PYTHON_3_9="3.9.23"
-LATEST_PYTHON_3_10="3.10.18"
-LATEST_PYTHON_3_11="3.11.13"
-LATEST_PYTHON_3_12="3.12.11"
+LATEST_PYTHON_3_9="3.9.24"
+LATEST_PYTHON_3_10="3.10.19"
+LATEST_PYTHON_3_11="3.11.14"
+LATEST_PYTHON_3_12="3.12.12"
 LATEST_PYTHON_3_13="3.13.8"
 LATEST_PYTHON_3_14="3.14.0"
 

spec/spec_helper.rb

@@ -10,10 +10,10 @@
 
 FIXTURE_DIR = Pathname.new(__FILE__).parent.join('fixtures')
 
-LATEST_PYTHON_3_9 = '3.9.23'
-LATEST_PYTHON_3_10 = '3.10.18'
-LATEST_PYTHON_3_11 = '3.11.13'
-LATEST_PYTHON_3_12 = '3.12.11'
+LATEST_PYTHON_3_9 = '3.9.24'
+LATEST_PYTHON_3_10 = '3.10.19'
+LATEST_PYTHON_3_11 = '3.11.14'
+LATEST_PYTHON_3_12 = '3.12.12'
 LATEST_PYTHON_3_13 = '3.13.8'
 LATEST_PYTHON_3_14 = '3.14.0'
 DEFAULT_PYTHON_FULL_VERSION = LATEST_PYTHON_3_13