Bump apps/identity-idp from `9bfa822` to `3a475ab`
Bump apps/identity-idp from `9bfa822` to `3a475ab`

Bumps [apps/identity-idp](https://github.com/18F/identity-idp) from `9bfa822` to `3a475ab`.
- [Release notes](https://github.com/18F/identity-idp/releases)
- [Commits](https://github.com/18F/identity-idp/compare/9bfa822f4e2e8d190718404b43ae69d938d7bd83...3a475abbc03f8d6bad0b962d6f16ca797383cf64)

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