[Security] Bump omniauth from 1.9.0 to 1.9.1 (#13229)

[Security] Bump omniauth from 1.9.0 to 1.9.1 (#13229)

Bumps [omniauth](https://github.com/omniauth/omniauth) from 1.9.0 to 1.9.1. **This update includes a security fix.**
- [Release notes](https://github.com/omniauth/omniauth/releases)
- [Commits](https://github.com/omniauth/omniauth/compare/v1.9.0...v1.9.1)

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