Update vmm-sys-util to 0.12.1

The update brings a fix for a security vulnerability behind
feature-gated code not used by vm-memory (the `with-serde` feature),
see GHSA-875g-mfp6-g7f9

Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

Cargo.toml

@@ -23,7 +23,7 @@ libc = "0.2.39"
 arc-swap = { version = "1.0.0", optional = true }
 bitflags = { version = "2.4.0", optional = true }
 thiserror = "1.0.40"
-vmm-sys-util = { version = "0.11.0", optional = true }
+vmm-sys-util = { version = "0.12.1", optional = true }
 
 [target.'cfg(windows)'.dependencies.winapi]
 version = "0.3"
@@ -32,7 +32,7 @@ features = ["errhandlingapi", "sysinfoapi"]
 [dev-dependencies]
 criterion = "0.3.0"
 matches = "0.1.0"
-vmm-sys-util = "0.11.0"
+vmm-sys-util = "0.12.1"
 
 [[bench]]
 name = "main"