Update argon2-cffi requirement in /templates/project_name

Updates the requirements on [argon2-cffi](https://github.com/hynek/argon2-cffi) to permit the latest version.
- [Release notes](https://github.com/hynek/argon2-cffi/releases)
- [Changelog](https://github.com/hynek/argon2-cffi/blob/main/CHANGELOG.md)
- [Commits](hynek/argon2-cffi@21.3.0...23.1.0)

---
updated-dependencies:
- dependency-name: argon2-cffi
  dependency-type: direct:production
...

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

templates/project_name/pyproject.toml

@@ -11,7 +11,7 @@ packages = [{ include = "{{ project_name }}" }]
 python = "^3.10"
 
 Pillow = "^10.1.0"
-argon2-cffi = "^21.3.0"
+argon2-cffi = "^23.1.0"
 hiredis = "^2.2.3"
 redis = "^5.0.1"