chore(deps): bump libdbus-sys from 0.2.3 to 0.2.4

Bumps [libdbus-sys](https://github.com/diwic/dbus-rs) from 0.2.3 to 0.2.4.
- [Release notes](https://github.com/diwic/dbus-rs/releases)
- [Commits](https://github.com/diwic/dbus-rs/compare/libdbus-sys-v0.2.3...libdbus-sys-v0.2.4)

---
updated-dependencies:
- dependency-name: libdbus-sys
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -1661,9 +1661,9 @@ dependencies = [
 
 [[package]]
 name = "libdbus-sys"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2264f9d90a9b4e60a2dc722ad899ea0374f03c2e96e755fe22a8f551d4d5fb3c"
+checksum = "9f8d7ae751e1cb825c840ae5e682f59b098cdfd213c350ac268b61449a5f58a0"
 dependencies = [
  "pkg-config",
 ]