Apache Airflow 2.5.2

## Significant Changes ### The date-time fields passed as API parameters or Params should be RFC3339-compliant (#29395) In case of API calls, it was possible that "+" passed as part of the date-time fields were not URL-encoded, and such date-time fields could pass validation. Such date-time parameters should now be URL-encoded (as ``%2B``). In case of parameters, we still allow IS8601-compliant date-time (so for example it is possible that ' ' was used instead of ``T`` separating date from time and no timezone was specified) but we raise deprecation warning. ### Default for ``[webserver] expose_hostname`` changed to ``False`` (#29547) The default for ``[webserver] expose_hostname`` has been set to ``False``, instead of ``True``. This means administrators must opt-in to expose webserver hostnames to end users. ## Bug Fixes - Fix validation of date-time field in API and Parameter schemas (#29395) - Fix grid logs for large logs (#29390) - Fix on_failure_callback when task receives a SIGTERM (#29743) - Update min version of python-daemon to fix containerd file limits (#29916) - POST ``/dagRuns`` API should 404 if dag not active (#29860) - DAG list sorting lost when switching page (#29756) - Fix Scheduler crash when clear a previous run of a normal task that is now a mapped task (#29645) - Convert moment with timezone to UTC instead of raising an exception (#29606) - Fix clear dag run ``openapi`` spec responses by adding additional return type (#29600) - Don't display empty rendered attrs in Task Instance Details page (#29545) - Remove section check from get-value command (#29541) - Do not show version/node in UI traceback for unauthenticated user (#29501) - Make ``prev_logical_date`` variable offset-aware (#29454) - Fix nested fields rendering in mapped operators (#29451) - Datasets, next_run_datasets, remove unnecessary timestamp filter (#29441) - ``Edgemodifier`` refactoring w/ labels in TaskGroup edge case (#29410) - Fix Rest API update user output (#29409) - Ensure Serialized DAG is deleted (#29407) - Persist DAG and task doc values in TaskFlow API if explicitly set (#29399) - Redirect to the origin page with all the params (#29212) - Fixing Task Duration view in case of manual DAG runs only (#22015) (#29195) - Remove poke method to fall back to parent implementation (#29146) - PR: Introduced fix to run tasks on Windows systems (#29107) - Fix warning in migrations about old config. (#29092) - Emit dagrun failed duration when timeout (#29076) - Handling error on cluster policy itself (#29056) - Fix kerberos authentication for the REST API. (#29054) - Fix leak sensitive field via V1EnvVar on exception (#29016) - Sanitize url_for arguments before they are passed (#29039) - Fix dag run trigger with a note. (#29228) - Write action log to DB when DAG run is triggered via API (#28998) - Resolve all variables in pickled XCom iterator (#28982) - Allow URI without authority and host blocks in ``airflow connections add`` (#28922) - Be more selective when adopting pods with KubernetesExecutor (#28899) - KubenetesExecutor sends state even when successful (#28871) - Annotate KubernetesExecutor pods that we don't delete (#28844) - Throttle streaming log reads (#28818) - Introduce dag processor job (#28799) - Fix #28391 manual task trigger from UI fails for k8s executor (#28394) - Logging poke info when external dag is not none and task_id and task_ids are none (#28097) - Fix inconsistencies in checking edit permissions for a DAG (#20346) ## Misc/Internal - Add a check for not templateable fields (#29821) - Removed continue for not in (#29791) - Move extra links position in grid view (#29703) - Bump ``undici`` from ``5.9.1`` to ``5.19.1`` (#29583) - Change expose_hostname default to false (#29547) - Change permissions of config/password files created by airflow (#29495) - Use newer setuptools ``v67.2.0`` (#29465) - Increase max height for grid view elements (#29367) - Clarify description of worker control config (#29247) - Bump ``ua-parser-js`` from ``0.7.31`` to ``0.7.33`` in ``/airflow/www`` (#29172) - Remove upper bound limitation for ``pytest`` (#29086) - Check for ``run_id`` url param when linking to ``graph/gantt`` views (#29066) - Clarify graph view dynamic task labels (#29042) - Fixing import error for dataset (#29007) - Update how PythonSensor returns values from ``python_callable`` (#28932) - Add dep context description for better log message (#28875) - Bump ``swagger-ui-dist`` from ``3.52.0`` to ``4.1.3`` in ``/airflow/www`` (#28824) - Limit ``importlib-metadata`` backport to ``< 5.0.0`` (#29924, #30069) ## Doc Only Changes - Update pipeline.rst - Fix query in ``merge_data()`` task (#29158) - Correct argument name of Workday timetable in timetable.rst (#29896) - Update ref anchor for env var link in Connection how-to doc (#29816) - Better description for limit in api (#29773) - Description of dag_processing.last_duration (#29740) - Update docs re: template_fields typing and subclasses (#29725) - Fix formatting of Dataset inlet/outlet note in TaskFlow concepts (#29678) - Specific use-case: adding packages via requirements.txt in compose (#29598) - Detect is 'docker-compose' existing (#29544) - Add Landing Times entry to UI docs (#29511) - Improve health checks in example docker-compose and clarify usage (#29408) - Remove ``notes`` param from TriggerDagRunOperator docstring (#29298) - Use ``schedule`` param rather than ``timetable`` in Timetables docs (#29255) - Add trigger process to Airflow Docker docs (#29203) - Update set-up-database.rst (#29104) - Several improvements to the Params doc (#29062) - Email Config docs more explicit env var examples (#28845) - Listener plugin example added (#27905)