Bump apps/signonotron2 from `cd17cb4` to `bd12ca6`
Bump apps/signonotron2 from `cd17cb4` to `bd12ca6`

Bumps [apps/signonotron2](https://github.com/alphagov/signonotron2) from `cd17cb4` to `bd12ca6`.
- [Release notes](https://github.com/alphagov/signonotron2/releases)
- [Commits](https://github.com/alphagov/signonotron2/compare/cd17cb410d8c9ee709b7eb55ce76da4d26b7b592...bd12ca6a2c0b4b9d418ecf8199d91ce843750d35)

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