Auto merge of rust-lang#63282 - Xanewok:update-rls, r=nikomatsakis

Update RLS

Most importantly this includes:
* Collect file -> edition mapping after AST expansion ([rust-lang#1513](rust-lang/rls#1513)) (enabled by rust-lang#62679)
* Fix rustfmt during builds by reading edition from manifest ([rust-lang#1533](rust-lang/rls#1533))

Which fixes the annoying problem where users couldn't format via RLS while `cargo fmt` worked.

The beta cut-off is drawing near and I'd like to make sure this lands before then.

Author: bors