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

[B4nan]

Summary

Part of the org-wide supply-chain hardening + pnpm migration. Migrates the website/ subdirectory of crawlee-python from Yarn 4 to pnpm. Only website/ changes — the Python root (uv) is untouched. Adds @apify/* + @crawlee/* whitelist at the Renovate layer (minimumReleaseAge: "1 day" was already set).

Changes

• website/package.json: renamed to crawlee-python-website, marked private: true; packageManager: pnpm@10.24.0; yarn / npx → pnpm in scripts
• website/pnpm-workspace.yaml: minimumReleaseAge: 1440 with @apify/* + @crawlee/* excluded
• website/.npmrc: node-linker=hoisted, link-workspace-packages=true, prefer-workspace-packages=true, public-hoist-pattern[]=*
• website/docusaurus.config.js: rename future.experimental_faster → future.faster (Docusaurus 3.10 renamed the key; pnpm resolves 3.10 from the ^3.9.2 range)
• Deleted website/yarn.lock and website/.yarnrc.yml; generated website/pnpm-lock.yaml
• pyproject.toml poe tasks build-docs / run-docs: drop corepack enable && yarn && yarn build/start, use pnpm install --frozen-lockfile && pnpm build/start
• New .github/actions/pnpm-install composite action (cached pnpm store, pattern from chore: move to pnpm from yarn apify-cli#1068)
• manual_release_stable.yaml version_docs job: use pnpm/action-setup + pnpm install --frozen-lockfile instead of corepack enable && yarn install; npx docusaurus → pnpm exec docusaurus; also commits pnpm-lock.yaml alongside versioned docs
• renovate.json: add internalChecksFilter: "strict" and @apify/* + @crawlee/* whitelist packageRule (minimumReleaseAge: "1 day" was already present)

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.30%. Comparing base (f241ead) to head (7c2e483).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1845      +/-   ##
==========================================
- Coverage   92.34%   92.30%   -0.04%     
==========================================
  Files         157      157              
  Lines       10921    10921              
==========================================
- Hits        10085    10081       -4     
- Misses        836      840       +4     

Flag	Coverage Δ
unit	92.30% <ø> (-0.04%)	⬇️

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