Update icu_list dependency to 2.3

[robertbastian]

This removes the icu_collections transitive dependency, and uses the smaller icu_locale_fallback instead of icu_locale.

r? manishearth

[rustbot]

These commits modify the Cargo.lock file. Unintentional changes to Cargo.lock can be introduced when switching branches and rebasing PRs.

If this was unintentional then you should revert the changes before this PR is merged.
Otherwise, you can ignore this comment.

rustc_error_messages was changed

cc @TaKO8Ki

The list of allowed third-party dependencies may have been modified! You must ensure that any new dependencies have compatible licenses before merging.

cc @davidtwco, @BoxyUwU

[Manishearth]

r=me but I would like to hold off on updating this until next week

View changes since this review

[robertbastian]

I'll get there

[rust-log-analyzer]

The job tidy failed! Check out the build log: (web) (plain enhanced) (plain)

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fmt: checked 7165 files
tidy check
tidy [rustdoc_json (src)]: `rustdoc-json-types` modified, checking format version
tidy: Skipping binary file check, read-only filesystem
tidy [alphabetical (src)]: /checkout/src/tools/tidy/src/deps.rs:356: line not in alphabetical order (tip: use --bless to sort this list)
tidy [alphabetical (src)]: FAIL
removing old virtual environment
creating virtual environment at '/checkout/obj/build/venv' using 'python3.12' and 'venv'
Requirement already satisfied: pip in ./build/venv/lib/python3.12/site-packages (24.0)
Collecting pip
  Downloading pip-26.2.1-py3-none-any.whl.metadata (4.6 kB)
---
typechecking javascript files
tidy: The following check failed: alphabetical (src)
Bootstrap failed while executing `test src/tools/tidy tidyselftest --extra-checks=py,cpp,js,spellcheck`
Currently active steps:
test::Tidy {  } at src/bootstrap/src/core/build_steps/test.rs:1661
Command `/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools-bin/rust-tidy --root-path=/checkout --cargo-path=/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo --output-dir=/checkout/obj/build --concurrency=4 --npm-path=/node/bin/yarn --ci=true --extra-checks=py,cpp,js,spellcheck` failed with exit code 1
Created at: src/bootstrap/src/core/build_steps/tool.rs:1626:23
Executed at: src/bootstrap/src/core/build_steps/test.rs:1743:29

Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 0:03:05
  local time: Tue Aug 18 16:28:59 UTC 2026
  network time: Tue, 18 Aug 2026 16:28:59 GMT
##[error]Process completed with exit code 1.
##[group]Run echo "disk usage:"