replace deprecated utcnow with utc

src/jmclient/auth.py

@@ -76,7 +76,8 @@ class JMTokenAuthority:
     def _issue(self, token_type: str) -> str:
         return jwt.encode(
             {
-                "exp": datetime.datetime.utcnow() + self.SESSION_VALIDITY[token_type],
+                "exp": datetime.datetime.now(datetime.UTC) +
+                    self.SESSION_VALIDITY[token_type],
                 "scope": self.scope,
             },
             self.signature_key[token_type],

test/jmclient/test_auth.py

@@ -29,7 +29,9 @@ class TestJMTokenAuthority:
     )
     def test_verify_valid(self, sig, token_type):
         token = jwt.encode(
-            {"exp": datetime.datetime.utcnow() + self.validity, "scope": self.scope},
+            {"exp": datetime.datetime.now(datetime.UTC) +
+                self.validity,
+             "scope": self.scope},
             sig,
             algorithm=self.token_auth.SIGNATURE_ALGORITHM,
         )
@@ -42,7 +44,9 @@ class TestJMTokenAuthority:
 
     def test_verify_expired(self):
         token = jwt.encode(
-            {"exp": datetime.datetime.utcnow() - self.validity, "scope": self.scope},
+            {"exp": datetime.datetime.now(datetime.UTC) -
+                self.validity,
+             "scope": self.scope},
             self.access_sig,
             algorithm=self.token_auth.SIGNATURE_ALGORITHM,
         )
@@ -52,7 +56,9 @@ class TestJMTokenAuthority:
 
     def test_verify_non_scoped(self):
         token = jwt.encode(
-            {"exp": datetime.datetime.utcnow() + self.validity, "scope": "wrong"},
+            {"exp": datetime.datetime.now(datetime.UTC) +
+                self.validity,
+             "scope": "wrong"},
             self.access_sig,
             algorithm=self.token_auth.SIGNATURE_ALGORITHM,
         )

test/jmclient/test_wallet_rpc.py

@@ -762,7 +762,8 @@ class TrialTestWRPC_JWT(WalletRPCTestBase):
         handler(response)
 
     def get_token(self, grant_type: str, status: str = "valid"):
-        now, delta = datetime.datetime.utcnow(), datetime.timedelta(hours=1)
+        now = datetime.datetime.now(datetime.UTC)
+        delta = datetime.timedelta(hours=1)
         exp = now - delta if status == "expired" else now + delta
 
         scope = f"walletrpc {self.daemon.wallet_name}"