Bump robthree/twofactorauth from 1.8.2 to 2.1.0

Bumps [robthree/twofactorauth](https://github.com/RobThree/TwoFactorAuth) from 1.8.2 to 2.1.0.
- [Release notes](https://github.com/RobThree/TwoFactorAuth/releases)
- [Changelog](https://github.com/RobThree/TwoFactorAuth/blob/master/CHANGELOG.md)
- [Commits](RobThree/TwoFactorAuth@1.8.2...v2.1.0)

---
updated-dependencies:
- dependency-name: robthree/twofactorauth
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

composer.json

@@ -49,7 +49,7 @@
         "psr/http-message": "^1.0",
         "psr/log": "^1.0",
         "psr/simple-cache": "^1.0",
-        "robthree/twofactorauth": "^1.8",
+        "robthree/twofactorauth": "^2.1",
         "sensio/framework-extra-bundle": "^6.2",
         "setasign/fpdi": "^2.2",
         "skorp/detect-incompatible-samesite-useragents": "^1.0",