We should be more explicit about OS and compiler versions used in the GitHub Actions builds, to avoid problems caused by unexpected changes to the defaults. This patch changes the OS and Xcode versions used from latest (currently 10.15) / default (currently 12.0) to 10.15 / 11.3.1.
------------- Commit messages: - Select explicit versions of macOS and Xcode Changes: https://git.openjdk.java.net/jdk/pull/1201/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1201&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8256277 Stats: 8 lines in 1 file changed: 6 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/1201.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1201/head:pull/1201 PR: https://git.openjdk.java.net/jdk/pull/1201
