chore(website): migrate to pnpm and enable minimum release age #464

Job	Run time
PR title check	5s
Tests / Integration tests (3.11, ubuntu-latest)	2m 13s
Tests / Integration tests (3.14, ubuntu-latest)	2m 15s
Docstrings checks / Docstrings checks	13s
Doc checks / Doc checks / Docs check	1m 6s
Code checks / Actions lint check	33s
Code checks / Spell check	5s
Code checks / Lint check / Lint check (3.13)	13s
Code checks / Lint check / Lint check (3.12)	11s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	40s
Code checks / Type check / Type check (3.11)	10s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 0s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 4s
Code checks / Lint check / Lint check (3.11)	13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	40s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	37s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	56s
Code checks / Type check / Type check (3.13)	11s
Code checks / Type check / Type check (3.12)	9s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 2s
Code checks / Lint check / Lint check (3.14)	10s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	42s
Code checks / Type check / Type check (3.14)	15s
	14m 43s

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