chore: upgrade to next 15

[ovflowd]

This PR attempts to upgrade to Next.js 15 with the following changes:

• Updated also dependencies, such as next-intl to the latest version, which required refactoring on its usage for compliance
• Updated all our dynamic segments and routes to be more performant (build only what is needed in a minimal build, actually make it compatible with static exports)
  We avoid building OG on static exports as they are costly to compute. Static exports should not support OG images at the moment.
• Updates usages of JSON imports to use with instead of assert
• Updated all other dependencies and fixed issues as needed
• Updated Storybook to use the plain React version of Storybook as we don't use any specific Next.js feature that should run on Storybook.

[vercel]

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Name	Status	Preview	Updated (UTC)
nodejs-org	✅ Ready (Inspect)	Visit Preview	Nov 15, 2024 2:33am

[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟢 98	🟢 100	🟢 96	🟢 91	🔗
/en/about	🟢 100	🟢 100	🟢 96	🟢 91	🔗
/en/about/previous-releases	🟢 100	🟢 100	🟢 96	🟢 92	🔗
/en/download	🟢 98	🟢 100	🟢 96	🟢 91	🔗
/en/blog	🟢 99	🟢 100	🟢 96	🟢 92	🔗

[ovflowd]

@leerob I was able to temporarily escape the Build issues by making the optional catch-all a regular catch-all and creating another route.

[ovflowd]

cc @nodejs/nodejs-website this PR now is fully functional and ready for review!