chore(deps): update actions/checkout action to v6 (#685) #278

Job	Run time
Prepare release metadata	17s
Lint check / Lint check (3.13)	13s
Lint check / Lint check (3.11)	12s
Lint check / Lint check (3.12)	12s
Lint check / Lint check (3.10)	10s
Type check / Type check (3.10)	20s
Type check / Type check (3.11)	23s
Unit tests / Unit tests (ubuntu-latest, 3.10)	28s
Type check / Type check (3.13)	25s
Type check / Type check (3.12)	19s
Unit tests / Unit tests (windows-latest, 3.12)	52s
Unit tests / Unit tests (windows-latest, 3.11)	51s
Unit tests / Unit tests (ubuntu-latest, 3.12)	30s
Unit tests / Unit tests (windows-latest, 3.13)	50s
Unit tests / Unit tests (ubuntu-latest, 3.11)	26s
Unit tests / Unit tests (windows-latest, 3.10)	58s
Unit tests / Unit tests (ubuntu-latest, 3.13)	29s
Integration tests / Integration tests (3.10)	8m 0s
Integration tests / Integration tests (3.13)	9m 26s
Update changelog / bump_and_update_changelog	16s
Publish to PyPI	26s
	26m 3s

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