lang/rust: Update to 1.61.0

[mikael]

Summary

Announce: https://blog.rust-lang.org/2022/05/19/Rust-1.61.0.html
ChangeLog: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1610-2022-05-19
Reviewe by:
PR:
Exp-run by:
Differential Revisio: https://reviews.freebsd.org/

Test Plan

14amd64 ok
122aarch64 ok
131 powerpc ok
131 powerpc64 ok
131 powerpc64le ok

Broken ports:
security/solana https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264292
devel/cargo-generate https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264290
games/abstreet https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264284