Auto merge of rust-lang#53701 - Xanewok:update-rls, r=kennytm

Update RLS

Continuation of rust-lang#53610.
Workspaces are tricky - the `json_internal` problem was only reproducible in Rust CI (not sure why it was only relevant to Windows?) and it seems that this was fixed by updating serde_json workspace-wide.

Tested locally in Rust repo and it seems to be working.

Nightlies are currently shipping without RLS, so it'd be great to include this in the next nightlies if possible.

Author: bors