build(deps): update bindgen requirement from 0.65.1 to 0.69.1 (#87)

Updates the requirements on [bindgen](https://github.com/rust-lang/rust-bindgen) to permit the latest version.
- [Release notes](https://github.com/rust-lang/rust-bindgen/releases)
- [Changelog](https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md)
- [Commits](rust-lang/rust-bindgen@v0.65.1...v0.69.1)

---
updated-dependencies:
- dependency-name: bindgen
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

v4l-sys/Cargo.toml

@@ -9,4 +9,4 @@ links = "v4l1 v4l2 v4lconvert"
 build = "build.rs"
 
 [build-dependencies]
-bindgen = "0.65.1"
+bindgen = "0.69.1"

v4l2-sys/Cargo.toml

@@ -8,4 +8,4 @@ license = "MIT"
 build = "build.rs"
 
 [build-dependencies]
-bindgen = "0.65.1"
+bindgen = "0.69.1"