Merge pull request #770 from wp-cli/fix-tests #485

Job	Run time
Build Phar	44s
Functional - WP latest on PHP 7.2 with MySQL 8.0	7m 21s
Functional - WP latest on PHP 7.3 with MySQL 8.0	6m 8s
Functional - WP trunk on PHP 7.2 with MySQL 8.0	6m 0s
Functional - WP latest on PHP 8.0 with MySQL 8.0	5m 58s
Functional - WP trunk on PHP 7.2 with MySQL 5.7	6m 13s
Functional - WP trunk on PHP 7.2 with MySQL 5.6	6m 15s
Functional - WP latest on PHP 7.4 with MySQL 8.0	5m 44s
Functional - WP trunk on PHP 8.0 with MySQL 8.0	5m 43s
Functional - WP trunk on PHP 8.0 with MySQL 5.7	5m 54s
Functional - WP trunk on PHP 8.0 with MySQL 5.6	5m 38s
Functional - WP 4.9 on PHP 7.2 with MySQL 5.6	5m 28s
Functional - WP trunk on PHP 7.4 with MySQL 8.0	5m 49s
Deployment	12s
Build RPM package	0s
Build DEB package	0s
	1h 13m 7s

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