chore: roll to 1.60.0-alpha-2026-05-05 #2882

Job	Run time
Java_21 (chromium)	6m 30s
Java_21 (webkit)	9m 13s
stable (macos-latest, msedge)	24m 13s
stable (ubuntu-latest, chrome)	7m 0s
stable (windows-latest, msedge)	23m 22s
stable (windows-latest, chrome)	12m 8s
stable (macos-latest, chrome)	13m 50s
Java_21 (firefox)	11m 29s
dev (ubuntu-latest, chromium)	6m 59s
dev (ubuntu-latest, firefox)	12m 43s
dev (windows-latest, webkit)	30m 18s
dev (ubuntu-latest, webkit)	10m 43s
dev (windows-latest, firefox)	25m 59s
dev (windows-latest, chromium)	12m 6s
dev (macos-latest, chromium)	8m 45s
dev (macos-latest, firefox)	22m 54s
dev (macos-15-xlarge, webkit)	8m 9s
	4h 6m 21s

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