v4.0.3
[SPARK-53540][INFRA] Remove `pypy3` from `spark-rm` image
[SPARK-28951][INFRA] Add release announce template
[SPARK-55115][INFRA][4.0] Use composable Dockerfile for release builds
[SPARK-52178][BUILD][FOLLOW-UP] Respect ANSWER for checking tags
[SPARK-37837][INFRA] Enable black formatter in dev Python scripts
[MINOR][INFRA] Add more know translations for contributors
[SPARK-55599][BUILD] Replaces dots to hyphens in release announcement pages
[SPARK-51665][BUILD] Truncate the lists in dev/test-jars.txt and dev/test-classes.txt during release process
[SPARK-53689][BUILD][FOLLOW-UP] Check if RELEASE_VERSION is already set properly
[SPARK-44442][MESOS] Remove Mesos support
[SPARK-48963][INFRA] Support `JIRA_ACCESS_TOKEN` in translate-contributors.py
[SPARK-52421][INFRA][FOLLOW-UP] Fix the link for KEYS