Bump argon2-cffi from 21.1.0 to 21.2.0 (#5578)

Bumps [argon2-cffi](https://github.com/hynek/argon2-cffi) from 21.1.0 to 21.2.0.
- [Release notes](https://github.com/hynek/argon2-cffi/releases)
- [Changelog](https://github.com/hynek/argon2-cffi/blob/main/CHANGELOG.md)
- [Commits](hynek/argon2-cffi@21.1.0...21.2.0)

---
updated-dependencies:
- dependency-name: argon2-cffi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -73,4 +73,4 @@ django-test-migrations==1.1.0
 djangosaml2==1.3.5
 drf-spectacular==0.21.0
 django-ratelimit==3.0.1
-argon2-cffi==21.1.0
+argon2-cffi==21.2.0