third-party/rust: bump bindgen to 0.69.4

Summary: Bring it up to most current version

Reviewed By: diliop, dtolnay

Differential Revision: D54605920

fbshipit-source-id: 25ea0683eb623fb1b2c804b37b7636cfed8edb6f

Cargo.toml

@@ -1,8 +1,6 @@
 [patch.crates-io]
 abomonation = { git = "https://github.com/markbt/abomonation", rev = "0f43346d2afa2aedc64d61f3f4273e8d1e454642" }
 base64urlsafedata = { git = "https://github.com/kanidm/webauthn-rs.git", rev = "d278c56adfa39a0723c79bdcd461644194bc5138" }
-bindgen = { git = "https://github.com/rust-lang/rust-bindgen", rev = "2997017b5a3065b83e9d76f0080d6cb99c94c0c1" }
-bindgen-cli = { git = "https://github.com/rust-lang/rust-bindgen", rev = "2997017b5a3065b83e9d76f0080d6cb99c94c0c1" }
 graphql-parser = { git = "https://github.com/graphql-rust//graphql-parser", rev = "8d76425d83c40670570cc325f57c730262f07456" }
 imgui = { git = "https://github.com/imgui-rs/imgui-rs.git", rev = "47bb38be50fafe99021b6436672dea1c28920e70" }
 lru-disk-cache = { git = "https://github.com/mozilla/sccache", rev = "fdbf843d174c6796d736b2b61dab0297670390f8" }