Revert "Revert "chore: removed RSA1_5 as default enc alg""

Author: jschlyter

src/cryptojwt/jwt.py

@@ -87,8 +87,8 @@ def __init__(
         sign=True,
         sign_alg="RS256",
         encrypt=False,
-        enc_enc="A128CBC-HS256",
-        enc_alg="RSA1_5",
+        enc_enc="A128GCM",
+        enc_alg="RSA-OAEP-256",
         msg_cls=None,
         iss2msg_cls=None,
         skew=15,