chore(deps): update pyotp requirement from ~=2.8.0 to ~=2.9.0 in /api

Updates the requirements on [pyotp](https://github.com/pyotp/pyotp) to permit the latest version.
- [Release notes](https://github.com/pyotp/pyotp/releases)
- [Changelog](https://github.com/pyauth/pyotp/blob/develop/Changes.rst)
- [Commits](https://github.com/pyotp/pyotp/compare/v2.8.0...v2.9.0)

---
updated-dependencies:
- dependency-name: pyotp
  dependency-type: direct:production
...

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

api/requirements.txt

@@ -11,7 +11,7 @@ django-pgtrigger~=4.7.0
 django-prometheus~=2.3.1
 dnspython~=2.4.1
 httpretty~=1.0.5  # 1.1 breaks tests. Does not run in production, so stick to it.
-pyotp~=2.8.0
+pyotp~=2.9.0
 psycopg~=3.1.10
 prometheus-client~=0.17.1  # added to control django-prometheus' dependency version
 psl-dns~=1.1.0