git: openjdk/jdk: 8256277: Github Action build on macOS should define OS and Xcode versions

[Robin Westberg]

Changeset: 588caab0
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2020-11-16 08:00:21 +0000
URL:       https://github.com/openjdk/jdk/commit/588caab0

8256277: Github Action build on macOS should define OS and Xcode versions

Reviewed-by: shade, ehelin, erikj

! .github/workflows/submit.yml