Sync OSS release snapshot

Refresh the public tree from internal release/oss-2026-07-21 at b439256. Remove the internal GitLab changelog, omit the internal provider from public documentation, and publish version 2.4.2 metadata.

Signed-off-by: Keshav Pradeep <32313895+keshprad@users.noreply.github.com>

Author: keshprad