build: Bump bitflags to 2.4.1

This is resolve the following clippy error:

warning: &-masking with zero
  --> devices/src/lib.rs:26:1
   |
26 | / bitflags! {
27 | |     pub struct AcpiNotificationFlags: u8 {
28 | |         const NO_DEVICES_CHANGED = 0;
29 | |         const CPU_DEVICES_CHANGED = 0b1;
...  |
33 | |     }
34 | | }
   | |_^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bad_bit_mask
   = note: `#[warn(clippy::bad_bit_mask)]` on by default
   = note: this warning originates in the macro `__impl_bitflags` which comes from the expansion of the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)

Signed-off-by: Bo Chen <chen.bo@intel.com>

devices/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2021"
 acpi_tables = { path = "../acpi_tables" }
 anyhow = "1.0.66"
 arch = { path = "../arch" }
-bitflags = "1.3.2"
+bitflags = "2.4.1"
 byteorder = "1.4.3"
 hypervisor = { path = "../hypervisor" }
 libc = "0.2.138"