Run the test suite

Remove duplicate seek test #553

# to view logs

Run time

Learn about OS # on GitHub Actions

Job	Run time
test (ubuntu-latest, 3.7)	21s
test (ubuntu-latest, 3.8)	21s
test (ubuntu-latest, 3.9)	20s
test (ubuntu-latest, 3.10)	39s
test (ubuntu-latest, 3.11)	26s
test (ubuntu-latest, 3.12)	23s
test (ubuntu-latest, 3.13)	33s
test (ubuntu-latest, pypy-3.8)	49s
test (ubuntu-latest, pypy-3.9)	47s
test (macos-latest, 3.7)	31s
test (windows-latest, 3.7)	1m 31s
test (macos-latest, 3.11)	51s
test (windows-latest, 3.11)	1m 44s
test (macos-latest, pypy-3.9)	58s
test (windows-latest, pypy-3.9)	2m 16s
	12m 30s