Auto merge of #74760 - tmandry:roll, r=tmandry

Update rustfmt and rls

Closes #74080, #74081.

rls changes:
- deps: update racer and cargo

rustfmt changes:
- preparation for potential rustfmt 1.4.19 (#4283)
- chore: backport 8157a3f0afe978d3e953420577f8344db7e905bf
- deps: bump rustc-ap to v669
- deps: bump rustc-ap-* to v668
- deps: bump rustc-ap* to v666
- Use correct span for match arms with the leading pipe and attributes (#3975)