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

Update RLS

Continuation of https://github.com/rust-lang/rust/pull/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.