Bump @enkidevs/eslint-config-backend from 9.5.0 to 12.0.0

Bumps [@enkidevs/eslint-config-backend](https://github.com/enkidevs/eslint-configs) from 9.5.0 to 12.0.0.
- [Release notes](https://github.com/enkidevs/eslint-configs/releases)
- [Commits](https://github.com/enkidevs/eslint-configs/compare/@enkidevs/[email protected]...@enkidevs/[email protected])

---
updated-dependencies:
- dependency-name: "@enkidevs/eslint-config-backend"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]