Bump to CPython 3.12.7. (#335)

* Bump to CPython 3.12.7.

* Fix missing comma.

Author: jsirois

pythonbuild/downloads.py

@@ -71,10 +71,10 @@
         "python_tag": "cp311",
     },
     "cpython-3.12": {
-        "url": "https://www.python.org/ftp/python/3.12.6/Python-3.12.6.tar.xz",
-        "size": 20434028,
-        "sha256": "1999658298cf2fb837dffed8ff3c033ef0c98ef20cf73c5d5f66bed5ab89697c",
-        "version": "3.12.6",
+        "url": "https://www.python.org/ftp/python/3.12.7/Python-3.12.7.tar.xz",
+        "size": 20444032,
+        "sha256": "24887b92e2afd4a2ac602419ad4b596372f67ac9b077190f459aba390faf5550",
+        "version": "3.12.7",
         "licenses": ["Python-2.0", "CNRI-Python"],
         "license_file": "LICENSE.cpython.txt",
         "python_tag": "cp312",