Add `pragma: no cover

singer_sdk/authenticators.py

@@ -571,7 +571,7 @@ def oauth_request_payload(self) -> dict:
             RuntimeError: If the JWT dependencies are not installed.
             ValueError: If the private key is not set.
         """
-        try:
+        try:  # pragma: no cover
             import jwt  # noqa: PLC0415
             from cryptography.hazmat.backends import default_backend  # noqa: PLC0415
             from cryptography.hazmat.primitives import serialization  # noqa: PLC0415