fix: update bindgen in fitsio-sys-bindgen
fix: update bindgen in fitsio-sys-bindgen

It seems just a version bump was required.

Looks like this PR: https://github.com/rust-lang/rust-bindgen/pull/2203

mindriot101/rust-fitsio,mindriot101/rust-fitsio,mindriot101/rust-fitsio,mindriot101/rust-fitsio,mindriot101/rust-fitsio