Require Python 3.11 in all distributions (#74157)

* Require Python 3.11 in all distributions

Every pyproject.toml that declares requires-python now says >= 3.11 and
drops the Python 3.10 trove classifier, the tomli build requirement that
only existed for 3.10 and the per-version dependency markers for 3.10.
Lock files are regenerated.

With 3.10 gone, the tomli fallbacks in scripts, dev tooling and tests go
too, along with the tomli additional_dependencies of the prek hooks and
the blacken-docs py310 target. The tomllib imports that only sat inside
functions because of the fallback move to the top of their modules. The
four dev/registry and scripts/ci/prek modules left out of the earlier
UP017 pass also take their timezone.utc to datetime.UTC fixes here. The
minimum host Python checked by check-min-python-version, the default
Python of run_generate_constraints.py and the provider cut-off date
parsing (fromisoformat, which reads a trailing Z from 3.11) follow the
new baseline.

ruff infers py311 from the new requires-python, which enables the
PEP 646 star-index fix (UP044) applied here and makes two more rules
reportable: UP042 (str, Enum to StrEnum) alters what str() and
format() return for serialized enum values, and ASYNC109 means
dropping the public timeout parameter from async APIs. Both need
per-site judgement, so they go on the ignore list with that rationale.

The datamodel-codegen target moves to 3.11 too, with use-specialized-enum
turned off for the same reason: otherwise the generated Task SDK and
airflowctl enums would switch from (str, Enum) to StrEnum.

* Drop the Python 3.10 provider metadata shim

With provider distributions now requiring Python 3.11, breeze can derive
requires-python and classifiers from the default and allowed versions
again. The patch-exclusion test and the matching example in
MANAGING_PROVIDERS_LIFECYCLE.rst move from 3.10.0 to 3.11.0, the oldest
patch release CI still covers.

* Keep Breeze's locked dependency versions when dropping Python 3.10

Relocking Breeze for the Python 3.11 baseline ran while recently bumped versions were still inside the 4-day exclude-newer window, so it downgraded pyjwt (reverting #73969), prek, boto3/botocore and filelock. Relocking from the previous lock keeps them and only drops the packages Python 3.11 no longer needs.

Generated-by: Claude Opus 5

---------

Co-authored-by: Jarek Potiuk <jarek@potiuk.com>

docker-tests/pyproject.toml

@@ -22,7 +22,6 @@ requires = [
     "packaging==26.3",
     "pathspec==1.1.1",
     "pluggy==1.6.0",
-    "tomli==2.4.1; python_version < '3.11'",
     "tomlkit==0.15.1",
     "trove-classifiers==2026.9.21.13",
 ]
@@ -34,7 +33,7 @@ description = "Docker tests for Apache Airflow"
 classifiers = [
     "Private :: Do Not Upload",
 ]
-requires-python = ">=3.10,!=3.15"
+requires-python = ">=3.11,!=3.15"
 authors = [
     { name = "Apache Software Foundation", email = "dev@airflow.apache.org" },
 ]

docker-tests/tests/docker_tests/test_prod_image.py

@@ -19,6 +19,7 @@ from __future__ import annotations
 import json
 import os
 from importlib.util import find_spec
+from tomllib import loads as load_tomllib
 
 import pytest
 import yaml
@@ -36,11 +37,6 @@ from docker_tests.docker_utils import (
 PROD_IMAGE_PROVIDERS_FILE_PATH = AIRFLOW_ROOT_PATH / "prod_image_installed_providers.txt"
 AIRFLOW_CORE_PYPROJECT_TOML = AIRFLOW_ROOT_PATH / "airflow-core" / "pyproject.toml"
 
-try:
-    from tomllib import loads as load_tomllib
-except ImportError:
-    from tomli import loads as load_tomllib  # type: ignore[no-redef]
-
 airflow_core_pyproject_toml = load_tomllib(AIRFLOW_CORE_PYPROJECT_TOML.read_text())
 
 SLIM_IMAGE_PROVIDERS = []