git: openjdk/jdk11u-dev: 8369226: GHA: Switch to MacOS 15

[Antonio Vieiro]

Changeset: 1b0f612e
Branch: master
Author:    Antonio Vieiro <avieiro at openjdk.org>
Date:      2025-11-19 15:41:42 +0000
URL:       https://git.openjdk.org/jdk11u-dev/commit/1b0f612e5e08cfa1581cf22433b36b5f075c0f23

8369226: GHA: Switch to MacOS 15

Reviewed-by: sgehwolf
Backport-of: 7fe25530c47cacc11c5214ef7ef4db443701eabf

! .github/workflows/build-macos.yml
! .github/workflows/main.yml
! .github/workflows/test.yml