deps: upgrade to AWS SDK v0.23/v0.53

[benesch]

Blocked on awslabs/aws-sdk-rust#722. Downgraded to v0.23/v0.53 (which is still an upgrade from current main), as it doesn't have the aforementioned bug.

Motivation

• Regular dependency bump PR.

Checklist

• This PR has adequate test coverage / QA involvement has been duly considered.

• This PR evolves an existing $T ⇔ Proto$T mapping (possibly in a backwards-incompatible way) and therefore is tagged with a T-proto label.

• If this PR will require changes to cloud orchestration, there is a
  companion cloud PR to account for those changes that is tagged with
  the release-blocker label (example).

• This PR includes the following user-facing behavior changes:

  • n/a

[benesch]

@alex-hunt-materialize the trick was to force path style addressing when the S3 endpoint is overridden (link), since local endpoints almost certainly don't support virtual host style addressing.

I expect this to go green, based on the last CI run, which only failed due to a minor formatting error. Marking this for automerge.