Add comment why not to use `~=` clause in deps definition #121

Job	Run time
Check async dostrings / Check whether doctrings for async methods are up-to-date	31s
Run lint and type checks / Lint and type checks (3.8)	39s
Run lint and type checks / Lint and type checks (3.9)	30s
Check version availability / Check version availability	24s
Run lint and type checks / Lint and type checks (3.10)	28s
Run lint and type checks / Lint and type checks (3.11)	28s
Run lint and type checks / Lint and type checks (3.12)	37s
Run unit tests / Run unit tests (ubuntu-latest, 3.8)	29s
Run unit tests / Run unit tests (ubuntu-latest, 3.9)	26s
Run unit tests / Run unit tests (ubuntu-latest, 3.10)	25s
Run unit tests / Run unit tests (ubuntu-latest, 3.11)	27s
Run unit tests / Run unit tests (ubuntu-latest, 3.12)	27s
Run unit tests / Run unit tests (windows-latest, 3.8)	1m 15s
Run unit tests / Run unit tests (windows-latest, 3.9)	1m 12s
Run unit tests / Run unit tests (windows-latest, 3.10)	1m 9s
Run unit tests / Run unit tests (windows-latest, 3.11)	1m 15s
Run unit tests / Run unit tests (windows-latest, 3.12)	1m 17s
Run integration tests / Run integration tests (3.8)	25s
Run integration tests / Run integration tests (3.9)	30s
Run integration tests / Run integration tests (3.10)	27s
Run integration tests / Run integration tests (3.11)	27s
Run integration tests / Run integration tests (3.12)	36s
	14m 24s

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