build(deps): bump tenacity from 9.1.2 to 9.1.4 in /backend

Bumps [tenacity](https://github.com/jd/tenacity) from 9.1.2 to 9.1.4.
- [Release notes](https://github.com/jd/tenacity/releases)
- [Commits](jd/tenacity@9.1.2...9.1.4)

---
updated-dependencies:
- dependency-name: tenacity
  dependency-version: 9.1.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]