Bump apps/identity-idp from `eb39bc9` to `b72d615`
Bump apps/identity-idp from `eb39bc9` to `b72d615`

Bumps [apps/identity-idp](https://github.com/18F/identity-idp) from `eb39bc9` to `b72d615`.
- [Release notes](https://github.com/18F/identity-idp/releases)
- [Commits](https://github.com/18F/identity-idp/compare/eb39bc92ac8c0073523a8f87f15efb6dfc5c7683...b72d6150b06a1a0d26c136097933e1527b3f8925)

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