Bump phpcompatibility/phpcompatibility-wp from 2.1.5 to 2.1.6 #208

Job	Run time
PHP 7.4 \| MySQL / WP 4.9	31s
PHP 7.4 \| MySQL / WP 5.0	24s
PHP 7.4 \| MySQL / WP 5.1	22s
PHP 7.4 \| MySQL / WP 5.2	38s
PHP 7.4 \| MySQL / WP 5.3	35s
PHP 7.4 \| MySQL / WP 5.4	23s
PHP 7.4 \| MySQL / WP 5.5	23s
PHP 7.4 \| MySQL / WP 5.6	33s
PHP 7.4 \| MySQL / WP 5.7	40s
PHP 7.4 \| MySQL / WP 5.8	33s
PHP 7.4 \| MySQL / WP 5.9	25s
PHP 7.4 \| MySQL / WP 6.0	26s
PHP 7.4 \| MySQL / WP 6.1	31s
PHP 7.4 \| MySQL / WP 6.2	24s
PHP 7.4 \| MySQL / WP 6.3	31s
PHP 7.4 \| MySQL / WP 6.4	25s
PHP 7.4 \| MySQL / WP 6.5	42s
PHP 8.0 \| MySQL / WP latest	28s
PHP 8.2 \| MySQL / WP latest	25s
PHP 8.1 \| MySQL / WP latest	22s
PHP 8.3 \| MySQL / WP latest	22s
PHP latest \| MariaDB / WP latest	27s
PHP latest \| MySQL / WP latest , translate API, with coverage	29s
PHP latest \| MySQL / WP trunk	22s
	11m 21s

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