Bump apps/whitehall from `bf42b6b` to `1a1db98`
Bump apps/whitehall from `bf42b6b` to `1a1db98`

Bumps [apps/whitehall](https://github.com/alphagov/whitehall) from `bf42b6b` to `1a1db98`.
- [Release notes](https://github.com/alphagov/whitehall/releases)
- [Commits](https://github.com/alphagov/whitehall/compare/bf42b6b01e3a73f4d9254ed16755f6e8a6b138af...1a1db98e9a891d32ac0f93b31ebf0a835b7a5e85)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails