deps: bump djangorestframework-simplejwt from 5.3.1 to 5.5.1 in /api (#6020)

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Author: dependabot[bot]

api/poetry.lock

@@ -166,7 +166,7 @@ pyotp = "^2.9.0"
 flagsmith-common = "^2.2.0"
 django-stubs = "^5.1.3"
 tzdata = "^2024.1"
-djangorestframework-simplejwt = "^5.3.1"
+djangorestframework-simplejwt = "^5.5.1"
 structlog = "^24.4.0"
 prometheus-client = "^0.21.1"
 django_cockroachdb = "~4.2"