bump bitflags dependency

This newer version has stronger guarantees about the type layout of the
generated types: It guarantees that types annotated with
`repr(transparent)` are newtypes around the base integer.

Author: Freax13

Cargo.toml

@@ -21,7 +21,7 @@ rust-version = "1.57" # Needed to support panic! in const fns
 
 [dependencies]
 bit_field = "0.10.1"
-bitflags = "1.0.4"
+bitflags = "1.3.2"
 volatile = "0.4.4"
 rustversion = "1.0.5"