[ci] Update actions to use macos-15 and Xcode 16.1#63

marcosgriselli wants to merge 3 commits intoMobileNativeFoundation:mainMobileNativeFoundation/swift-index-store:mainfrom

marcosgriselli:update-ci-xcode-16.1marcosgriselli/swift-index-store:update-ci-xcode-16.1Copy head branch name to clipboard