Bump simplesamlphp/simplesamlphp from 2.1.1 to 2.1.2

Bumps [simplesamlphp/simplesamlphp](https://github.com/simplesamlphp/simplesamlphp) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/simplesamlphp/simplesamlphp/releases)
- [Changelog](https://github.com/simplesamlphp/simplesamlphp/blob/v2.1.2/docs/simplesamlphp-changelog.md)
- [Commits](simplesamlphp/simplesamlphp@v2.1.1...v2.1.2)

---
updated-dependencies:
- dependency-name: simplesamlphp/simplesamlphp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>