chore(website): migrate to pnpm and enable minimum release age #467

Job	Run time
PR title check	6s
Code checks / Actions lint check	31s
Tests / Integration tests (3.14, ubuntu-latest)	2m 20s
Tests / Integration tests (3.11, ubuntu-latest)	2m 11s
Docstrings checks / Docstrings checks	12s
Code checks / Spell check	8s
Doc checks / Doc checks / Docs check	1m 7s
Code checks / Lint check / Lint check (3.13)	12s
Code checks / Lint check / Lint check (3.14)	10s
Code checks / Type check / Type check (3.12)	11s
Code checks / Type check / Type check (3.14)	13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	44s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	44s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	42s
Code checks / Lint check / Lint check (3.12)	21s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	43s
Code checks / Lint check / Lint check (3.11)	10s
Code checks / Type check / Type check (3.13)	11s
Code checks / Type check / Type check (3.11)	13s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 3s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 12s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	59s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 4s
	15m 27s

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