devel/rust-cbindgen: update to 0.24.3

Changes: https://github.com/eqrion/cbindgen/releases/tag/v0.24.0
Changes: https://github.com/eqrion/cbindgen/releases/tag/v0.24.1
Changes: https://github.com/eqrion/cbindgen/releases/tag/v0.24.2
Changes: https://github.com/eqrion/cbindgen/releases/tag/v0.24.3
Reported by: GitHub (watch releases)