Request for backport to Jammy to build Chromium on ARM

[Nathan Teodosio]

Hi, I'd like to request a backport of the newest bindgen to 22.04.

The build of Chromium 126 is failing[1] on ARM with

--->
:: error: Found argument '--allowlist-item' which wasn't expected, or isn't valid in this context
:: Did you mean --allowlist-function?
::
:: USAGE:
:: bindgen [FLAGS] [OPTIONS] <header> -- <clang-args>...
<---

On x64, that doesn't fail because Google's provided Rust tool-chain is used, which is more recent — its 'bindgen --version' reports 0.69.4. Google does not provide it for ARM.

[1] https://launchpadlibrarian.net/731733225/buildlog_snap_ubuntu_jammy_armhf_chromium-snap-from-source-dev_BUILDING.txt.gz