Fix `to_snake` conversion #11315

Job	Run time
docs-build	1m 24s
lint 3.8	55s
test ubuntu / 3.8	2m 4s
lint 3.9	55s
test fastapi	1m 36s
test ubuntu / 3.9	1m 53s
lint 3.10	55s
test memray	3m 50s
test ubuntu / 3.10	1m 54s
lint 3.11	54s
test ubuntu / 3.11	2m 1s
lint 3.12	54s
test pydantic plugin	1m 29s
test ubuntu / 3.12	2m 19s
mypy 1.0.1 / 3.10	4m 7s
test macos / 3.8	4m 0s
mypy lockfile / 3.10	3m 16s
test macos / 3.9	3m 57s
mypy 1.2.0 / 3.10	4m 6s
test typing-extensions 4.6.1 on Python 3.8	2m 23s
test macos / 3.10	2m 55s
mypy 1.4.1 / 3.10	2m 45s
test typing-extensions 4.6.1 on Python 3.9	2m 10s
test macos / 3.11	2m 51s
mypy 1.5.1 / 3.10	2m 49s
test typing-extensions 4.6.1 on Python 3.10	2m 14s
test macos / 3.12	6m 16s
mypy lockfile / 3.8	3m 4s
test typing-extensions 4.6.1 on Python 3.11	2m 4s
test windows / 3.8	2m 40s
mypy lockfile / 3.9	3m 10s
test typing-extensions 4.6.1 on Python 3.12	2m 38s
mypy lockfile / 3.11	3m 4s
test windows / 3.9	2m 35s
test typing-extensions main on Python 3.8	2m 17s
mypy 1.5.1 / 3.12	2m 54s
test windows / 3.10	2m 30s
test typing-extensions main on Python 3.9	2m 24s
test windows / 3.11	3m 19s
test typing-extensions main on Python 3.10	2m 14s
test windows / 3.12	2m 50s
test typing-extensions main on Python 3.11	2m 4s
test ubuntu / pypy3.8	6m 47s
test typing-extensions main on Python 3.12	2m 44s
test ubuntu / pypy3.9	6m 57s
test ubuntu / pypy3.10	6m 36s
coverage-combine	30s
check	3s
release	0s
Send tweet	0s
	2h 10m 16s

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