third-party/rust: update bindgen 0.72.1 from git

Summary:
This grabs a current snapshot of bindgen from the git repo,
merged with the 0.72.1 release branch so that we don't have lowering of
the release version.

Also includes:
- [PR 3325](rust-lang/rust-bindgen#3325) - optimize bitfield insertion/extraction.

The first dramatically improves the codegen, because it no longer inserts and extracts
bitfields a bit at a type. async_sgu code size dropped
from 89704->88168, a 1.7% reduction just from this. `valid_addr_filtering_wqe`
which reads a couple of bitfields (2 bit and 32 bit) drops from 232 bytes of code
to 124.

Reviewed By: dtolnay

Differential Revision: D88676649

fbshipit-source-id: caea88cd480c83f757fa81bad828601a7d83dc09

Author: Jeremy Fitzhardinge

Cargo.toml

@@ -2,8 +2,8 @@
 abomonation = { git = "https://github.com/markbt/abomonation", rev = "0f43346d2afa2aedc64d61f3f4273e8d1e454642" }
 audio_streams = { git = "https://github.com/google/crosvm", rev = "7d2e877a2a0a772c199fe8b6b51aec7c1b166467" }
 base64urlsafedata = { git = "https://github.com/kanidm/webauthn-rs.git", rev = "d278c56adfa39a0723c79bdcd461644194bc5138" }
-bindgen = { git = "https://github.com/jsgf/rust-bindgen", rev = "c185e3fb83839fb0909e261db783fe81943b000c" }
-bindgen-cli = { git = "https://github.com/jsgf/rust-bindgen", rev = "c185e3fb83839fb0909e261db783fe81943b000c" }
+bindgen = { git = "https://github.com/jsgf/rust-bindgen", rev = "4d385d21c160e6ee1f443aeb7e00528a1dc7fd44" }
+bindgen-cli = { git = "https://github.com/jsgf/rust-bindgen", rev = "4d385d21c160e6ee1f443aeb7e00528a1dc7fd44" }
 bytemuck = { git = "https://github.com/jsgf/bytemuck", rev = "e7ba210910d49dee833773b2a3e0f5e39805ba08" }
 bytemuck_derive = { git = "https://github.com/jsgf/bytemuck", rev = "e7ba210910d49dee833773b2a3e0f5e39805ba08" }
 c2pa = { git = "https://github.com/dhruvmongia/c2pa-rs", rev = "871a0f10d6a3a627229fc769de3d88f85024b64d" }