Apache Airflow 2.3.4

Bug Fixes

• Disable attrs state management on MappedOperator (#24772)
• Serialize pod_override to JSON before pickling executor_config (#24356)
• Fix pid check (#24636)
• Rotate session id during login (#25771)
• Fix mapped sensor with reschedule mode (#25594)
• Cache the custom secrets backend so the same instance gets re-used (#25556)
• Add right padding (#25554)
• Fix reducing mapped length of a mapped task at runtime after a clear (#25531)
• Fix airflow db reset when dangling tables exist (#25441)
• Change disable_verify_ssl behaviour (#25023)
• Set default task group in dag.add_task method (#25000)
• Removed interfering force of index. (#25404)
• Remove useless logging line (#25347)
• Adding mysql index hint to use index on task_instance.state in critical section query (#25673)
• Configurable umask to all daemonized processes. (#25664)
• Fix the errors raised when None is passed to template filters (#25593)
• Allow wildcarded CORS origins (#25553)
• Fix "This Session's transaction has been rolled back" (#25532)
• Fix Serialization error in TaskCallbackRequest (#25471)
• fix - resolve bash by absolute path (#25331)
• Add __repr__ to ParamsDict class (#25305)
• Only load distribution of a name once (#25296)
• convert TimeSensorAsync target_time to utc on call time (#25221)
• call updateNodeLabels after expandGroup (#25217)
• Stop SLA callbacks gazumping other callbacks and DOS'ing the DagProcessorManager queue (#25147)
• Fix invalidateQueries call (#25097)
• airflow/www/package.json: Add name, version fields. (#25065)
• No grid auto-refresh for backfill dag runs (#25042)
• Fix tag link on dag detail page (#24918)
• Fix zombie task handling with multiple schedulers (#24906)
• Bind log server on worker to IPv6 address (#24755) (#24846)
• Add %z for %(asctime)s to fix timezone for logs on UI (#24811)
• TriggerDagRunOperator.operator_extra_links is attr (#24676)
• Send DAG timeout callbacks to processor outside of prohibit_commit (#24366)
• Don't rely on current ORM structure for db clean command (#23574)
• Clear next method when clearing TIs (#23929)
• Two typing fixes (#25690)

Doc only changes

• Update set-up-database.rst (#24983)
• Fix syntax in mysql setup documentation (#24893 (#24939)
• Note how DAG policy works with default_args (#24804)
• Update PythonVirtualenvOperator Howto (#24782)
• Doc: Add hyperlinks to Github PRs for Release Notes (#24532)

Misc/Internal

• Remove depreciation warning when use default remote tasks logging handlers (#25764)
• clearer method name in scheduler_job.py (#23702)
• Bump cattrs version (#25689)
• Include missing mention of external_executor_id in sql_engine_collation_for_ids docs (#25197)
• Refactor DR.task_instance_scheduling_decisions (#24774)
• Sort operator extra links (#24992)
• Extends resolve_xcom_backend function level documentation (#24965)
• Upgrade FAB to 4.1.3 (#24884)
• Limit Flask to <2.3 in the wake of 2.2 breaking our tests (#25511)
• Limit astroid version to < 2.12 (#24982)
• Move javascript compilation to host (#25169)
• Bump typing-extensions and mypy for ParamSpec (#25088)