Merge pull request #490 from patchlevel/add-more-tests #1735

Job	Run time
Sqlite (locked, 8.3, ubuntu-latest)	12s
mysql (locked, 8.3, ubuntu-latest, 5.7)	1m 0s
Postgres (locked, 8.3, ubuntu-latest, 12.17)	1m 3s
mysql (locked, 8.3, ubuntu-latest, 8.0)	55s
mysql (locked, 8.3, ubuntu-latest, 8.2)	1m 20s
Postgres (locked, 8.3, ubuntu-latest, 13.13)	52s
Postgres (locked, 8.3, ubuntu-latest, 14.10)	51s
Postgres (locked, 8.3, ubuntu-latest, 15.5)	1m 26s
Postgres (locked, 8.3, ubuntu-latest, 16.1)	1m 40s
mariadb (locked, 8.3, ubuntu-latest, 10.4)	52s
mariadb (locked, 8.3, ubuntu-latest, 10.6)	59s
mariadb (locked, 8.3, ubuntu-latest, 10.11)	51s
mariadb (locked, 8.3, ubuntu-latest, 11.2)	1m 18s
	13m 19s

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