Upgrade to Next 15

[dct0]

Basic Information

• Instrumentation hook is now stable, meaning Sentry can finally catch the serverside errors better
• Next won't cache pages by default. Helps with cases where user signs out and hits the back button
• Other shit like fetch not cached by default
• headers() is now awaitable. Look at PPR to make more of the page load statically
• Generate a new t3 app and check to see if anything has changed

Other Information

• Wait a bit for compat