Upgrade to nix 0.23.

m-ou-se · m-ou-se · commit 2597ff18bcba · 2021-10-01T12:39:53.000+02:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -18,4 +18,4 @@ half-duplex SPI access, and full-duplex SPI access.
 [dependencies]
 libc = "0.2"
 bitflags = "1.3"
-nix = "0.22"
+nix = ">= 0.22, < 0.24"
