v0.2.4

Maintenance release. No library or CLI source changes — dependency
bumps and CI housekeeping only.

Changed

• Bumped aws-config from 1.8.17 to 1.8.18.
• Bumped aws-sdk-s3 from 1.134.0 to 1.135.0.
• Bumped aws-smithy-http-client from 1.1.12 to 1.1.13.
• Bumped pinned GitHub Actions in the actions Dependabot group
  (actions/checkout 6.0.2 to 6.0.3, github/codeql-action 4.36.0
  to 4.36.2, taiki-e/install-action 2.79.15 to 2.81.6).