Test

docs: add comprehensive guide for async database sessions #3780

Job	Run time
test (macos-latest, 3.14, highest)	27s
test (windows-latest, 3.12, lowest-direct)	1m 26s
test (macos-latest, 3.11, highest)	29s
test (ubuntu-latest, 3.14, highest)	32s
test (macos-latest, 3.13, highest)	21s
test (windows-latest, 3.14, highest)	45s
test (ubuntu-latest, 3.10, lowest-direct)	30s
test (ubuntu-latest, 3.13, highest)	33s
coverage-combine	16s
alls-green	4s
	5m 23s

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