build: bump rubocop from 0.53.0 to 0.54.0
build: bump rubocop from 0.53.0 to 0.54.0

Bumps [rubocop](https://github.com/bbatsov/rubocop) from 0.53.0 to 0.54.0.
- [Release notes](https://github.com/bbatsov/rubocop/releases)
- [Changelog](https://github.com/bbatsov/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bbatsov/rubocop/compare/v0.53.0...v0.54.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ministryofjustice/prison-visits-public,ministryofjustice/prison-visits-public,ministryofjustice/prison-visits-public,ministryofjustice/prison-visits-public