chore(deps)(deps): bump boto3 from 1.42.79 to 1.42.84 in /backend

Bumps [boto3](https://github.com/boto/boto3) from 1.42.79 to 1.42.84.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.42.79...1.42.84)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.42.84
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]