Upgrade mini-css-extract-plugin (#62698)
## For Contributors
### What?
This PR upgrades the mini-css-extract-plugin dependency
### Why?
In this
[version](https://github.com/webpack-contrib/mini-css-extract-plugin/releases/tag/v2.4.4),
the bug related to content hash is fixed. This bug causes different
hashes of CSS chunks in the webpack chunk.
### How?
Closes
[NEXT-1146](https://linear.app/vercel/issue/NEXT-1146/hashes-are-different-between-multiple-servers-with-generatebuildid)
Fixes #49230
Co-authored-by: Madiyar Turkenov <tagwriter@mail.ru>
Co-authored-by: Sam Ko <sam@vercel.com>
