chore: release Docusaurus 3.0.0

[slorber]

Motivation

Release Docusaurus 3.0.0

https://deploy-preview-9478--docusaurus-2.netlify.app/

Links

• GitHub release PR: chore: release Docusaurus 3.0.0 #9478
• GitHub release notes: https://github.com/facebook/docusaurus/releases/tag/v3.0.0
• GitHub release discussion: 3.0.0 #9481
• Upgrade guide: docusaurus.io/docs/migration/v3
• Blog post PR: docs: Docusaurus v3.0 blog post #9433

[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 71	🟢 97	🟢 100	🟢 100	🟠 89	Report
/docs/installation	🟠 53	🟢 98	🟢 100	🟢 100	🟠 89	Report
/docs/category/getting-started	🟠 82	🟢 100	🟢 100	🟢 90	🟠 89	Report
/blog	🟠 60	🟢 100	🟢 100	🟢 90	🟠 89	Report
/blog/preparing-your-site-for-docusaurus-v3	🟠 53	🟢 97	🟢 100	🟢 100	🟠 89	Report
/blog/tags/release	🟠 84	🟢 100	🟢 100	🟠 80	🟠 89	Report
/blog/tags	🟠 70	🟢 100	🟢 100	🟢 90	🟠 89	Report

[netlify]

✅ [V2]

Name	Link
🔨 Latest commit	ca8b463
🔍 Latest deploy log	https://app.netlify.com/sites/docusaurus-2/deploys/65411bdaf50b190008effde1
😎 Deploy Preview	https://deploy-preview-9478--docusaurus-2.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

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[dannytlake]

Hello @slorber! I am excited about v3, thank you for all the effort on releasing this.

Just an FYI, the link in this PR for the v3 migration guide is broken: https://docusaurus.io/docs/migration/v3

[slorber]

Thanks @dannytlake

It is broken for now but it won't be broken soon, before we officially announce it