[jdk11u-dev] RFR: 8369226: GHA: Switch to MacOS 15 [v3]

[Antonio Vieiro]

> Backport of [JDK-8369226](https://bugs.openjdk.org/browse/JDK-8369226) from JDK17 that upgrades `macos-13` runners to `macos-15-intel`, and XCode from `14.3.1` to `16.4`, since `macos-13` will be removed in early december.
> 
> The backport is not clean, as there are many differences between GHA in JDK11 and upper versions (e.g.
> [JDK-8341097](https://bugs.openjdk.org/browse/JDK-8341097), [JDK-8325194](https://bugs.openjdk.org/browse/JDK-8325194)).

Antonio Vieiro has updated the pull request incrementally with one additional commit since the last revision:

  8336451: [11u] GHA macos-13 and macos-15 builders are unable to resolve local hostname

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/3117/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/3117/files/f607e393..2e624f30

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3117&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3117&range=01-02

  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3117.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3117/head:pull/3117

PR: https://git.openjdk.org/jdk11u-dev/pull/3117