Bump eslint-config-cityssm from 5.0.0 to 6.0.0

Bumps [eslint-config-cityssm](https://github.com/cityssm/eslint-config-cityssm) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/cityssm/eslint-config-cityssm/releases)
- [Commits](cityssm/eslint-config-cityssm@v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: eslint-config-cityssm
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]