use ffmpeg-sys-next, single version of bindgen

One version is easier to keep track of and should reduce build times.

* replace ffmpeg-sys with ffmpeg-sys-next, which (among other things)
  uses bindgen 0.64. ffmpeg-sys was using a pre-0.60 version, so in
  some of our call sites, it hit build errors on Rust 1.70 due to
  rust-lang/rust-bindgen#2083
  https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md#0600

* update cargo lock stuff to use the same version

* remove stale comments about older versions

ffmpeg/Cargo.toml

@@ -4,8 +4,8 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-# XXX: ffmpeg-sys doesn't seem to build without avcodec.
-ffmpeg-sys = {git = "https://github.com/meh/rust-ffmpeg-sys", rev="8ba86ee3f9b85a3ad86002d980fb518f5e90afb1", default-features = false, features = ["avcodec"] }
+# XXX: ffmpeg-sys-next doesn't seem to build without avcodec.
+ffmpeg-sys = { package = "ffmpeg-sys-next", version = "6.0.1", default-features = false, features = ["avcodec"] }
 thiserror = "1.0"
 
 [features]

macos/video-toolbox/build.rs

@@ -8,9 +8,6 @@ fn main() {
 
         let sdk_root = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk";
 
-        // the "whitelist_" functions have been renamed in newer bindgen versions, but we use the
-        // old names for wider compatibility
-        #[allow(deprecated)]
         let bindings = bindgen::Builder::default()
             .clang_arg(format!("-isysroot{}", sdk_root))
             .header("src/lib.hpp")