Update bindgen requirement from 0.66 to 0.69 (#99)

Author: dependabot[bot]

swiftnav-sys/Cargo.toml

@@ -10,7 +10,7 @@ license = "LGPL-3.0"
 rust-version = "1.62.1"
 
 [build-dependencies]
-bindgen = "0.66"
+bindgen = "0.69"
 cmake = "0.1.46"
 
 [features]

swiftnav-sys/build.rs

@@ -56,7 +56,7 @@ fn main() {
         ))
         // Tell cargo to invalidate the built crate whenever any of the
         // included header files changed.
-        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .blocklist_type("u8")
         .blocklist_type("u16")
         .blocklist_type("u32")