Replace `macos-14` with `macos-latest` in GitHub actions for building mac release files

[taylor.smock]

In #21533, the fix switched from macos-latest to macos-14 to force GH to build on an arm mac.

Over the next twelve weeks (2024-04 to 2024-07), all macos-latest runners will be moved to macos-14.

I just switched to macos-14 to force the change now instead of sometime in the next few months.

[taylor.smock]

In 19030/josm:

Fix #21533, see #23600: Native Apple Silicon Support

When building on macOS, the macos-jpackage.sh script now takes two arguments:

1. The JOSM revision
2. An additional JDK to build against (this should be of a different architecture)

If an additional JDK is specified, it is assumed that it is a different
architecture, and the two built apps are combined using lipo for a universal binary.

ant.yml does have some changes to make it easier to debug packaging issues in
PRs; the PR does still need to upload the specific package and add its branch to
the triggers.

[taylor.smock]

In 19036/josm:

See #23600: Native Apple Silicon Support

Add entitlements so that the app can start.