rust: zerocopy: update to v0.8.62

Update our vendored copy of `zerocopy` (and `zerocopy-derive`) to v0.8.62.

This update advances 8 releases, with 3 of them carrying most of the
changes. It contain

rust: zerocopy: update to v0.8.62

Update our vendored copy of `zerocopy` (and `zerocopy-derive`) to v0.8.62.

This update advances 8 releases, with 3 of them carrying most of the
changes. It contains new features as well as fixes [1]. However, almost
nothing has changed that requires updates on our side: we only need to
move our non-ASCII change to the recently added `project.rs` file, and
to add an SPDX license identifier to the also new `invariant.rs` file
(I reported it to upstream [2]).

The following script may be used to check for the remaining differences:

for path in $(cd rust/zerocopy-derive/ && find . -type f ! -name README.md); do
curl --silent --show-error --location \
https://github.com/google/zerocopy/raw/v0.8.62/zerocopy/zerocopy-derive/src/$path |
git diff --no-index - rust/zerocopy-derive/$path &&
echo $path: OK
done

for path in $(cd rust/zerocopy/ && find . -type f ! -name README.md); do
curl --silent --show-error --location \
https://github.com/google/zerocopy/raw/v0.8.62/zerocopy/$path |
git diff --no-index - rust/zerocopy/$path &&
echo $path: OK
done

Comparing the output above with the one for the latest update (v0.8.54)
shows no new differences on our side apart from the two mentioned above.

Cc: Joshua Liebow-Feeser <joshlf@google.com>
Cc: Jack Wrenn <jswrenn@google.com>
Link: https://github.com/google/zerocopy/releases [1]
Link: https://github.com/google/zerocopy/issues/3858 [2]
Assisted-by: LLM
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20261013184809.35143-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

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