Test third party stubs with stubtest (#5615)

stubs/PyJWT/@tests/stubtest_allowlist.txt

@@ -0,0 +1,11 @@
+jwt.InvalidKeyError
+jwt.MissingRequiredClaimError.__init__
+jwt.algorithms.ECAlgorithm
+jwt.algorithms.Ed25519Algorithm
+jwt.algorithms.HMACAlgorithm.SHA256
+jwt.algorithms.HMACAlgorithm.SHA384
+jwt.algorithms.HMACAlgorithm.SHA512
+jwt.algorithms.RSAAlgorithm
+jwt.algorithms.RSAPSSAlgorithm
+jwt.contrib.algorithms.py_ecdsa
+jwt.contrib.algorithms.pycrypto