devops: migrate to GitHub App for automation (#1770) #2640

Job	Run time
Java_21 (chromium)	5m 34s
stable (ubuntu-latest, chrome)	6m 40s
dev (ubuntu-latest, chromium)	7m 27s
Java_21 (firefox)	10m 1s
stable (windows-latest, chrome)	10m 47s
dev (ubuntu-latest, firefox)	10m 3s
Java_21 (webkit)	30m 14s
stable (macos-latest, chrome)	11m 9s
dev (ubuntu-latest, webkit)	30m 14s
stable (windows-latest, msedge)	23m 42s
dev (windows-latest, chromium)	6m 13s
stable (macos-latest, msedge)	22m 40s
dev (windows-latest, firefox)	12m 43s
dev (windows-latest, webkit)	10m 13s
dev (macos-latest, chromium)	6m 51s
dev (macos-latest, firefox)	11m 22s
dev (macos-latest, webkit)	30m 16s
	4h 6m 9s

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