Bump MSRV

.github/workflows/CICD.yml

@@ -1,7 +1,7 @@
 name: CICD
 
 env:
-  MIN_SUPPORTED_RUST_VERSION: "1.50.0"
+  MIN_SUPPORTED_RUST_VERSION: "1.56.0"
   CICD_INTERMEDIATES_DIR: "_cicd-intermediates"
 
 on:

README.md

@@ -124,7 +124,7 @@ or Windows Terminal since Windows 10 1903).
 
 ### Via cargo
 
-If you have Rust 1.46 or higher, you can install `hexyl` from source via `cargo`:
+If you have Rust 1.56 or higher, you can install `hexyl` from source via `cargo`:
 ```
 cargo install hexyl
 ```