python313: 3.13.0a3 -> 3.13.0a5

https://docs.python.org/3.13/whatsnew/changelog.html#python-3-13-0-alpha-4
https://docs.python.org/3.13/whatsnew/changelog.html#python-3-13-0-alpha-5

pkgs/development/interpreters/python/cpython/3.13/virtualenv-permissions.patch

···
+diff --git a/Lib/venv/__init__.py b/Lib/venv/__init__.py
+index 4856594755..6769ab8026 100644
+--- a/Lib/venv/__init__.py
++++ b/Lib/venv/__init__.py
+@@ -522,6 +522,7 @@ def skip_file(f):
+                     with open(dstfile, 'wb') as f:
+                         f.write(new_data)
+                     shutil.copymode(srcfile, dstfile)
++                os.chmod(dstfile, 0o644)
+ 
+     def upgrade_dependencies(self, context):
+         logger.debug(

pkgs/development/interpreters/python/cpython/default.nix

···
     # Make sure that the virtualenv activation scripts are
     # owner-writable, so venvs can be recreated without permission
     # errors.
+  ] ++ optionals (pythonOlder "3.13") [
     ./virtualenv-permissions.patch
+  ] ++ optionals (pythonAtLeast "3.13") [
+    ./3.13/virtualenv-permissions.patch
   ] ++ optionals mimetypesSupport [
     # Make the mimetypes module refer to the right file
     ./mimetypes.patch

pkgs/development/interpreters/python/default.nix

···
       major = "3";
       minor = "13";
       patch = "0";
-      suffix = "a3";
+      suffix = "a5";
     };
-    hash = "sha256-IHhMgwTrHGnID5ZuvfB3W+LjfiPfO2JGHuwSqF3Pfq0=";
+    hash = "sha256-Hom1NVGD58iYpaAbL2AXKP5J/bidnJeB8TNghHqu+mI=";
     inherit (darwin) configd;
     inherit passthruFun;
   };