v4.2.0
[SPARK-56540][INFRA] Add libuv1-dev to CI Docker images to fix R package fs build failure
[SPARK-28951][INFRA] Add release announce template
[SPARK-55115][INFRA] Use composable Dockerfile for release builds
Revert "[SPARK-56478][INFRA] Remove hamcrest-core-1.3 in the Maven local as a workaround"
[SPARK-54960][INFRA] Simplify generating contributors of the release process
[SPARK-53666][FOLLOWUP] Update generated llms.txt file location
[SPARK-55599][BUILD] Replaces dots to hyphens in release announcement pages
[SPARK-57035][DOCS] Always target /docs/latest/ in DocSearch index
[SPARK-53689][BUILD][FOLLOW-UP] Check if RELEASE_VERSION is already set properly
[SPARK-52421][INFRA][FOLLOW-UP] Fix the link for KEYS