chore: mark v1.56.0 #2800

Job	Run time
stable (ubuntu-latest, chrome)	8m 28s
stable (windows-latest, chrome)	13m 20s
stable (macos-latest, chrome)	14m 22s
stable (windows-latest, msedge)	21m 18s
stable (macos-latest, msedge)	27m 33s
Java_21 (chromium)	6m 3s
Java_21 (firefox)	12m 47s
dev (ubuntu-latest, webkit)	11m 28s
dev (windows-latest, webkit)	13m 14s
dev (windows-latest, firefox)	19m 56s
dev (ubuntu-latest, firefox)	12m 16s
dev (windows-latest, chromium)	11m 20s
dev (macos-latest, webkit)	12m 54s
dev (macos-latest, firefox)	18m 53s
Java_21 (webkit)	10m 50s
dev (ubuntu-latest, chromium)	8m 54s
dev (macos-latest, chromium)	9m 36s
	3h 53m 12s

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