build(deps): bump ex_aws from 2.5.7 to 2.5.8 (#31)

Bumps [ex_aws](https://github.com/ex-aws/ex_aws) from 2.5.7 to 2.5.8.
- [Release notes](https://github.com/ex-aws/ex_aws/releases)
- [Changelog](https://github.com/ex-aws/ex_aws/blob/main/CHANGELOG.md)
- [Commits](ex-aws/ex_aws@v2.5.7...v2.5.8)

---
updated-dependencies:
- dependency-name: ex_aws
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>