Bump apps/whitehall from `aeac906` to `7a7b7f0`
Bump apps/whitehall from `aeac906` to `7a7b7f0`

Bumps [apps/whitehall](https://github.com/alphagov/whitehall) from `aeac906` to `7a7b7f0`.
- [Release notes](https://github.com/alphagov/whitehall/releases)
- [Commits](https://github.com/alphagov/whitehall/compare/aeac906c7b561cf4c3d9f4d960dd5c76c134d625...7a7b7f03ccc8ce91f2e3000ad5a5f4dc73c2fa4e)

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