Update to newer rust compiler and avr-hal version

Also see Rahix/avr-hal#268.

Author: Rahix

Cargo.toml

@@ -18,7 +18,7 @@ embedded-hal = "0.2.3"
 
 [dependencies.arduino-hal]
 git = "https://github.com/rahix/avr-hal"
-rev = "f84c0dff774c2292bc932b670955165161ecc7d1"
+rev = "d0d2f243bd3e10b49f6a78d44839a6caa8be7d43"
 {% case board -%}
   {%- when "Arduino Leonardo" -%}
     features = ["arduino-leonardo"]

rust-toolchain.toml

@@ -1,4 +1,4 @@
 [toolchain]
-channel = "nightly-2021-01-07"
-components = [ "rust-src" ]
-profile = "minimal"
+channel = "nightly-2022-05-10"
+components = ["rust-src"]
+profile = "minimal"