macos

Replaced macos-15-intel from macos-13 and added macos-15 #625

Job	Run time
ruby-versions / Generate Ruby versions	4s
macos-14 3.2	19s
macos-14 2.7	33s
macos-14 3.0	17s
macos-14 3.3	20s
macos-14 3.4	23s
macos-14 3.1	16s
macos-14 head	19s
macos-14 debug	31s
macos-14 jruby-head	1m 10s
macos-15-intel 2.7	1m 34s
macos-15-intel 3.0	58s
macos-15-intel head	36s
macos-15-intel 3.3	37s
macos-15-intel debug	48s
macos-15-intel 3.2	49s
macos-15-intel 3.1	42s
macos-15 2.7	1m 1s
macos-15 3.0	24s
macos-15-intel 3.4	36s
macos-15 3.1	27s
macos-15 3.2	20s
macos-15 head	21s
macos-15-intel jruby-head	2m 42s
macos-15 3.4	26s
macos-15 debug	31s
macos-15 3.3	20s
macos-15 jruby-head	1m 42s
	19m 6s

Provide feedback