Fix and update EVG configuration for releases/v4.1#1435

Merged

eramongodb merged 2 commits intomongodb:releases/v4.1from

eramongodb:releases/v4.1

Jul 31, 2025

Commits on Jul 31, 2025

Update Clang 18 -> Clang 19 for rhel95 distro (#1421)
eramongodb
committed
CXX-3287 assume role before `pull-mongohouse-image.sh` (#1413)

kevinAlbs
authored and
eramongodb
committed