chore(website): migrate to pnpm and enable minimum release age #459

Job	Run time
Docstrings checks / Docstrings checks	13s
PR title check	5s
Tests / Integration tests (3.14, ubuntu-latest)	2m 18s
Tests / Integration tests (3.11, ubuntu-latest)	2m 4s
Code checks / Spell check	6s
Doc checks / Doc checks / Docs check	1m 1s
Code checks / Actions lint check	34s
Code checks / Type check / Type check (3.11)	10s
Code checks / Type check / Type check (3.14)	10s
Code checks / Type check / Type check (3.13)	14s
Code checks / Type check / Type check (3.12)	14s
Code checks / Lint check / Lint check (3.13)	15s
Code checks / Lint check / Lint check (3.14)	11s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 5s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 6s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	39s
Code checks / Lint check / Lint check (3.11)	13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	41s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	42s
Code checks / Lint check / Lint check (3.12)	13s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 1s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 14s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	37s
	15m 6s

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