2.x prep (#1463) #64

Job	Run time
php (8.2, false)	1m 29s
php (8.3, false)	1m 37s
php (8.4, false, --ignore-platform-reqs)	1m 34s
php (8.5, true, --ignore-platform-reqs)	1m 39s
packages / validate (8.2, ubuntu-latest, ast, json, grpc, false)	1m 17s
packages / validate (8.3, ubuntu-latest, ast, json, grpc, false)	55s
packages / validate (8.4, ubuntu-latest, ast, json, grpc, false)	1m 15s
	9m 46s

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