[9.0] Add PR upgrade tests from merge base to PR HEAD (#128823)#129521

Merged

elasticsearchmachine merged 5 commits intoelastic:9.0from

mosche:backport/9.0/pr-128823

Jul 14, 2025

Commits on Jun 17, 2025

Add PR upgrade tests from merge base to PR HEAD (#128823)

mosche
and
ldematte
committed

Commits on Jul 8, 2025

Merge branch '9.0' into backport/9.0/pr-128823
mosche
authored

Commits on Jul 10, 2025

Merge branch '9.0' into backport/9.0/pr-128823
mosche
authored

Commits on Jul 14, 2025