docs: Update "Upgrading to v2" guide (#472) #162

Job	Run time
Prepare release metadata	0s
Lint check / Lint check (3.10)	10s
Lint check / Lint check (3.11)	13s
Lint check / Lint check (3.13)	14s
Lint check / Lint check (3.12)	9s
Type check / Type check (3.13)	13s
Type check / Type check (3.10)	14s
Type check / Type check (3.11)	12s
Type check / Type check (3.12)	15s
Async dostrings check / Async docstrings check	14s
Unit tests / Unit tests (ubuntu-latest, 3.12)	27s
Unit tests / Unit tests (ubuntu-latest, 3.10)	24s
Unit tests / Unit tests (ubuntu-latest, 3.13)	24s
Unit tests / Unit tests (ubuntu-latest, 3.11)	23s
Unit tests / Unit tests (windows-latest, 3.10)	36s
Unit tests / Unit tests (windows-latest, 3.11)	41s
Unit tests / Unit tests (windows-latest, 3.13)	35s
Unit tests / Unit tests (windows-latest, 3.12)	38s
Integration tests / Integration tests (3.12)	27s
Integration tests / Integration tests (3.11)	31s
Integration tests / Integration tests (3.13)	28s
Integration tests / Integration tests (3.10)	30s
Integration tests / Integration tests for PRs from forks	0s
Integration tests / Approve integration tests for PRs from forks	0s
Publish to PyPI	0s
Update changelog	0s
	7m 58s

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