Auto merge of #87345 - Xanewok:update-rls, r=Mark-Simulacrum

Unbreak and update RLS

Closes #86905
Closes #86606
Closes #86607

This also prunes old mio 0.6 thanks to Tokio 1.0 bump, so this should now build on aarch64 Windows.

r? `@Mark-Simulacrum`

Author: bors