[Bug] - s3cmd - attempt to set canned ACL --acl-public returns 400

[lrm25]

Describe the bug
The --acl-public canned ACL should result in non-admin users being able to read files in an admin-owned bucket. However, attempting to set it results in a returned 400.
ERROR: S3 error: 400 (InvalidRequest): Invalid Request.

To Reproduce

1. Start versitygw, e.g.: ./versitygw --access=******* --secret=******** --region=us-east-1 --iam-dir=/Users/lukemccrone/devel/versitygw/iam --cert /Users/lukemccrone/devel/versitygw/cert.pem --key /Users/lukemccrone/devel/versitygw/versitygw.pem posix --versioning-dir /tmp/versioning /tmp/gw
2. Create bucket, e.g.: s3cmd -c ./tests/s3cfg.local.default --access_key=******* --secret_key=******** --no-check-certificate mb s3://versity-gwtest-bucket-one-1
3. Attempt to set ACL, e.g.: s3cmd -c ./tests/s3cfg.local.default --access_key=******** --secret_key=******** --no-check-certificate setacl s3://versity-gwtest-bucket-one-1 --acl-public

Expected behavior
Command succeeds, and info call (e.g. s3cmd -c ./tests/s3cfg.local.luke --access_key=******** --secret_key=******** --no-check-certificate info s3://versity-gwtest-bucket-luke-four-1) afterwards shows lines similar to:
ACL: {root key}: FULL_CONTROL
ACL: anon: READ

Server Version
Version : v1.0.8
Build : bacd85c
BuildTime: 2024-11-21_05:29:52PM
Darwin Lukes-MacBook-Pro.local 23.4.0 Darwin Kernel Version 23.4.0: Fri Mar 15 00:12:25 PDT 2024; root:xnu-10063.101.17~1/RELEASE_ARM64_T6030 arm64