feat: use python3.11+ for cibuildwheel driver (#1912)

* chore: use SPEC 0 schedule for cibuildwheel

* remove support for {python} and {pip} in commands

* Remove specific Python versions from the update-dependencies job

The requirements pinning is done by uv now, so we don't need to
run the versions of Python to do the pinning anymore.

---------

Co-authored-by: Joe Rickerby <joerick@mac.com>

test/test_projects/base.py

@@ -1,12 +1,12 @@
 from __future__ import annotations
 
 from pathlib import Path
-from typing import Any, Dict, Union
+from typing import Any
 
 import jinja2
 
-FilesDict = Dict[str, Union[str, jinja2.Template]]
-TemplateContext = Dict[str, Any]
+FilesDict = dict[str, str | jinja2.Template]
+TemplateContext = dict[str, Any]
 
 
 class TestProject: