ci: Github actions > use ubuntu arm runner #1882

Job	Run time
php-cs	26s
examples (8.3, macos-13)	1m 39s
unit (8.1, lowest)	17s
examples (8.3, macos-14)	1m 41s
unit (8.1, locked)	19s
examples (8.3, windows-latest)	1m 38s
unit (8.2, lowest)	20s
examples (ubuntu-latest)	48s
unit (8.2, locked)	17s
examples (ubuntu-24.04-arm)	1m 0s
unit (8.3, lowest)	21s
examples (ubuntu-latest, alpine)	10s
unit (8.3, locked)	30s
examples (ubuntu-24.04-arm, alpine)	2m 12s
unit (8.4, lowest)	31s
unit (8.4, locked)	30s
finish	3s
	12m 42s

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