Apache Airflow 2.6.2

## Bug Fixes - Cascade update of TaskInstance to TaskMap table (#31445) - Fix Kubernetes executors detection of deleted pods (#31274) - Use keyword parameters for migration methods for mssql (#31309) - Control permissibility of driver config in extra from airflow.cfg (#31754) - Fixing broken links in openapi/v1.yaml (#31619) - Hide old alert box when testing connection with different value (#31606) - Add TriggererStatus to OpenAPI spec (#31579) - Resolving issue where Grid won't un-collapse when Details is collapsed (#31561) - Fix sorting of tags (#31553) - Add the missing ``map_index`` to the xcom key when skipping downstream tasks (#31541) - Fix airflow users delete CLI command (#31539) - Include triggerer health status in Airflow ``/health`` endpoint (#31529) - Remove dependency already registered for this task warning (#31502) - Use kube_client over default CoreV1Api for deleting pods (#31477) - Ensure min backoff in base sensor is at least 1 (#31412) - Fix ``max_active_tis_per_dagrun`` for Dynamic Task Mapping (#31406) - Fix error handling when pre-importing modules in DAGs (#31401) - Fix dropdown default and adjust tutorial to use 42 as default for proof (#31400) - Fix crash when clearing run with task from normal to mapped (#31352) - Make BaseJobRunner a generic on the job class (#31287) - Fix ``url_for_asset`` fallback and 404 on DAG Audit Log (#31233) - Don't present an undefined execution date (#31196) - Added spinner activity while the logs load (#31165) - Include rediss to the list of supported URL schemes (#31028) - Optimize scheduler by skipping "non-schedulable" DAGs (#30706) - Save scheduler execution time during search for queued dag_runs (#30699) - Fix ExternalTaskSensor to work correctly with task groups (#30742) - Fix DAG.access_control can't sync when clean access_control (#30340) - Fix failing get_safe_url tests for latest Python 3.8 and 3.9 (#31766) - Fix typing for POST user endpoint (#31767) - Fix wrong update for nested group default args (#31776) - Fix overriding ``default_args`` in nested task groups (#31608) - Mark ``[secrets] backend_kwargs`` as a sensitive config (#31788) - Executor events are not always "exited" here (#30859) - Validate connection IDs (#31140) ## Misc/Internal - Add Python 3.11 support (#27264) - Replace unicodecsv with standard csv library (#31693) - Bring back unicodecsv as dependency of Airflow (#31814) - Remove found_descendents param from get_flat_relative_ids (#31559) - Fix typing in external task triggers (#31490) - Wording the next and last run DAG columns better (#31467) - Skip auto-document things with :meta private: (#31380) - Add an example for sql_alchemy_connect_args conf (#31332) - Convert dask upper-binding into exclusion (#31329) - Upgrade FAB to 4.3.1 (#31203) - Added metavar and choices to --state flag in airflow dags list-jobs CLI for suggesting valid state arguments. (#31308) - Use only one line for tmp dir log (#31170) - Rephrase comment in setup.py (#31312) - Add fullname to owner on logging (#30185) - Make connection id validation consistent across interface (#31282) - Use single source of truth for sensitive config items (#31820) ## Doc only changes - Add docstring and signature for _read_remote_logs (#31623) - Remove note about triggerer being 3.7+ only (#31483) - Fix version support information (#31468) - Add missing BashOperator import to documentation example (#31436) - Fix task.branch error caused by incorrect initial parameter (#31265) - Update callbacks documentation (errors and context) (#31116) - Add an example for dynamic task mapping with non-TaskFlow operator (#29762) - Few doc fixes - links, grammar and wording (#31719) - Add description in a few more places about adding airflow to pip install (#31448) - Fix table formatting in docker build documentation (#31472) - Update documentation for constraints installation (#31882)