* merge `main`, fix workspace dependencies
* chore(dev): use `matcher` in Middleware
* fix(middleware): support `cookies` as `Map`
* simplify
* chore(example): use new Middleware API
* chore(example): use `next-auth@latest`
* docs(middleware): document new Middleware API
* docs(ts): update inline example
* fix(ts): make cookies optional
* remove non-null assertion
