Auto merge of #136605 - lsunsi:update-rustc-hash, r=lqd

chore: update rustc-hash 2.1.0 to 2.1.1

This PR updates the rustc-hash crate to include a palliative fix for #135477.
The discussion for this can be found in the issue and on rust-lang/rustc-hash#55.

This PR is the output of running `cargo +nightly update rustc-hash@2.1.0`. I ran all tests locally and they all seem to pass, with the exception of `tests/ui/process/nofile-limit.rs` which always fails on my setup.

`@steffahn` `@orlp` and `@Noratrieb` all have full context on this, I'm opening the pull request trying to be helpful. I'm not sure if anything else needs to be done, like documentation I'm not aware of or running any special CIs but if I can do anything else please let me know!