phpstan: fix deprecation warning #1591

Job	Run time
code-style-and-static-analysis	1m 13s
Test Suite (7.4, sqlite, 5-min)	56s
Test Suite (7.4, sqlite, 5-max)	1m 17s
Test Suite (7.4, mysql, 5-min)	1m 18s
Test Suite (7.4, mysql, 5-max)	1m 33s
Test Suite (7.4, pgsql, 5-min)	1m 11s
Test Suite (7.4, pgsql, 5-max)	1m 37s
Test Suite (7.4, agnostic, 5-min)	36s
Test Suite (7.4, agnostic, 5-max)	56s
Test Suite (8.2, sqlite, 5-min)	54s
Test Suite (8.2, sqlite, 5-max)	55s
Test Suite (8.2, sqlite, 6-min)	50s
Test Suite (8.2, sqlite, 6-max)	48s
Test Suite (8.2, sqlite, 7-min)	50s
Test Suite (8.2, sqlite, 7-max)	57s
Test Suite (8.2, mysql, 5-min)	31s
Test Suite (8.2, mysql, 5-max)	38s
Test Suite (8.2, mysql, 6-min)	32s
Test Suite (8.2, mysql, 6-max)	35s
Test Suite (8.2, mysql, 7-min)	31s
Test Suite (8.2, mysql, 7-max)	42s
Test Suite (8.2, pgsql, 5-min)	1m 15s
Test Suite (8.2, pgsql, 5-max)	1m 11s
Test Suite (8.2, pgsql, 6-min)	1m 15s
Test Suite (8.2, pgsql, 6-max)	1m 9s
Test Suite (8.2, pgsql, 7-min)	1m 31s
Test Suite (8.2, pgsql, 7-max)	1m 10s
Test Suite (8.2, agnostic, 5-min)	24s
Test Suite (8.2, agnostic, 5-max)	23s
Test Suite (8.2, agnostic, 6-min)	23s
Test Suite (8.2, agnostic, 6-max)	24s
Test Suite (8.2, agnostic, 7-min)	25s
Test Suite (8.2, agnostic, 7-max)	25s
	29m 15s

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