Test the handlers #796

Job	Run time
copyright_and_dependencies_check (ubuntu-latest, 3.10)	2m 15s
lock_check (ubuntu-latest, 3.10, 1.4.0)	36s
gitleaks	9s
lock_check (macos-latest, 3.10, 1.4.0)	29s
linter_checks (ubuntu-latest, 3.10)	4m 36s
lock_check (windows-latest, 3.10, 1.4.0)	1m 26s
test (ubuntu-latest, 3.8)	1m 40s
test (ubuntu-latest, 3.9)	1m 32s
test (ubuntu-latest, 3.10)	2m 17s
test (ubuntu-latest, 3.11)	2m 12s
test (macos-latest, 3.8)	2m 17s
test (macos-latest, 3.9)	1m 22s
test (macos-latest, 3.10)	1m 36s
test (macos-latest, 3.11)	1m 36s
test (windows-latest, 3.8)	4m 12s
test (windows-latest, 3.9)	4m 22s
test (windows-latest, 3.10)	4m 43s
test (windows-latest, 3.11)	4m 58s
	42m 18s

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