rust: Update Cargo.lock

Update Cargo.lock on top of commit  7ecd3f7107 ("Merge tag
'for-upstream' of https://gitlab.com/bonzini/qemu into staging").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/r/20260309172440.66409-1-philmd@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust/Cargo.lock

@@ -172,7 +172,6 @@ dependencies = [
  "migration",
  "qemu_macros",
  "qom",
- "system",
  "util",
 ]
 
@@ -351,7 +350,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0dca6411025b24b60bfa7ec1fe1f8e710ac09782dca409ee8237ba74b51295fd"
 dependencies = [
  "serde_core",
- "serde_derive",
 ]
 
 [[package]]
@@ -407,6 +405,7 @@ dependencies = [
  "bql",
  "common",
  "glib-sys",
+ "hwcore",
  "migration",
  "qom",
  "system-sys",