bump turbo (#19179)

The Bun build issue was caused by Turborepo passing through
`USERPROFILE` from the env. Probably need to file a bug with Bun:

```
Works:
env: USERPROFILE: undefined
CWD: `D:\a\tailwindcss\tailwindcss\packages\@tailwindcss-standalone`

Fails:
env: USERPROFILE: "C:\Users\runneradmin"
CWD: `D:\a\tailwindcss\tailwindcss\packages\@tailwindcss-standalone`
```