Bump apps/whitehall from `aec2b6c` to `e606ed9`
Bump apps/whitehall from `aec2b6c` to `e606ed9`

Bumps [apps/whitehall](https://github.com/alphagov/whitehall) from `aec2b6c` to `e606ed9`.
- [Release notes](https://github.com/alphagov/whitehall/releases)
- [Commits](https://github.com/alphagov/whitehall/compare/aec2b6c1428d1416f0f4cedd8005e355782ad248...e606ed9e2711a1ea9ba5b25fbadbc03cde260561)

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