Add support for Python 3.12.7 (#1650)

Release announcement:
https://www.python.org/downloads/release/python-3127/

Changelog:
https://docs.python.org/3.12/whatsnew/changelog.html#python-3-12-7-final

Binary builds:
https://github.com/heroku/heroku-buildpack-python/actions/runs/11119534362

GUS-W-14846794.

Author: edmorley

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+- Added support for Python 3.12.7. ([#1650](https://github.com/heroku/heroku-buildpack-python/pull/1650))
+- Changed the default Python version for new apps from 3.12.6 to 3.12.7. ([#1650](https://github.com/heroku/heroku-buildpack-python/pull/1650))
 - Fixed Django collectstatic debug output being shown if `DEBUG_COLLECTSTATIC` was set to `0` or the empty string. ([#1646](https://github.com/heroku/heroku-buildpack-python/pull/1646))
 - Stopped adding a trailing `:` to `C_INCLUDE_PATH`, `CPLUS_INCLUDE_PATH`, `LIBRARY_PATH`, `LD_LIBRARY_PATH` and `PKG_CONFIG_PATH`. ([#1645](https://github.com/heroku/heroku-buildpack-python/pull/1645))
 - Removed remnants of the unused `.heroku/vendor/` directory. ([#1644](https://github.com/heroku/heroku-buildpack-python/pull/1644))

README.md

@@ -42,7 +42,7 @@ A `requirements.txt` must be present at the root of your application's repositor
 
 To specify your python version, you also need a `runtime.txt` file - unless you are using the default Python runtime version.
 
-Current default Python Runtime: Python 3.12.6
+Current default Python Runtime: Python 3.12.7
 
 Alternatively, you can provide a `setup.py` file, or a `Pipfile`.
 Using `pipenv` will generate `runtime.txt` at build time if one of the field `python_version` or `python_full_version` is specified in the `requires` section of your `Pipfile`.
@@ -60,7 +60,7 @@ Specify a Python Runtime
 
 Supported runtime options include:
 
-- `python-3.12.6` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
+- `python-3.12.7` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.11.10` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.10.15` on all [supported stacks](https://devcenter.heroku.com/articles/stack#stack-support-details)
 - `python-3.9.20` on Heroku-20 and Heroku-22 only

bin/default_pythons

@@ -5,7 +5,7 @@
 # the env vars to subprocesses.
 # shellcheck disable=2034
 
-LATEST_312="python-3.12.6"
+LATEST_312="python-3.12.7"
 LATEST_311="python-3.11.10"
 LATEST_310="python-3.10.15"
 LATEST_39="python-3.9.20"

spec/fixtures/pipenv_and_runtime_txt/runtime.txt

@@ -1 +1 @@
-python-3.12.6
+python-3.12.7

spec/fixtures/python_3.12/runtime.txt

@@ -1 +1 @@
-python-3.12.6
+python-3.12.7

spec/fixtures/runtime_txt_only/runtime.txt

@@ -1 +1 @@
-python-3.12.6
+python-3.12.7

spec/fixtures/runtime_txt_with_stray_whitespace/runtime.txt

@@ -1,3 +1,3 @@
 
- python-3.12.6 
+ python-3.12.7 
 

spec/hatchet/python_version_spec.rb

@@ -206,7 +206,7 @@
     include_examples 'builds with the requested Python version', LATEST_PYTHON_3_11
   end
 
-  context 'when runtime.txt contains python-3.12.6' do
+  context 'when runtime.txt contains python-3.12.7' do
     let(:app) { Hatchet::Runner.new('spec/fixtures/python_3.12') }
 
     include_examples 'builds with the requested Python version', LATEST_PYTHON_3_12

spec/spec_helper.rb

@@ -13,7 +13,7 @@
 LATEST_PYTHON_3_9 = '3.9.20'
 LATEST_PYTHON_3_10 = '3.10.15'
 LATEST_PYTHON_3_11 = '3.11.10'
-LATEST_PYTHON_3_12 = '3.12.6'
+LATEST_PYTHON_3_12 = '3.12.7'
 DEFAULT_PYTHON_VERSION = LATEST_PYTHON_3_12
 
 # The requirement versions are effectively buildpack constants, however, we want