chore: Update swc_core to v0.90.21 (vercel#63031)

### What?

- Update `swc_core` to fix performance regression caused by the creation
of the `tokio` runtime.

This PR practically reverts
vercel#62441.

 - Apply various minifier bug fixes.

   - swc-project/swc#8730
   - swc-project/swc#8733
   - swc-project/swc#8725
   - swc-project/swc#8726
   - swc-project/swc#8727

- Apply swc-project/plugins#271 (Closes
PACK-2714)


### Why?

Someone reported a performance regression. See
swc-project/swc#8708

### How?

Closes PACK-2693

---------

Co-authored-by: Tobias Koppers <[email protected]>