git: openjdk/jdk21u-dev: master: 8342988: GHA: Build JTReg in single step

[Aleksey Shipilev]

Changeset: 6e6f8b2f
Branch: master
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2025-01-10 08:43:02 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/6e6f8b2f90e362ceb2d76e791cd6e58cf5d3ddbd

8342988: GHA: Build JTReg in single step

Reviewed-by: serb, phh
Backport-of: 88dc655a6d6cfc71c467405b62bd35beeed7794f

+ .github/actions/build-jtreg/action.yml
! .github/actions/get-jtreg/action.yml
! .github/workflows/main.yml