Fix the following SonarQube code smells:

1) Use the "RegExp.exec()" method instead.
2) Remove parameter form or provide default value.
3) Extract this nested ternary operation into an independent statement.
4) Replace this character class by the character itself.
5) Unnecessary use of conditional expression for default assignment.
6) Prefer using an optional chain expression instead, as it's more concise and easier to read.

web/pgadmin/authenticate/internal.py

@@ -41,7 +41,7 @@ class BaseAuthentication(metaclass=AuthSourceRegistry):
         pass
 
     @abstractmethod
-    def authenticate(self):
+    def authenticate(self, form):
         pass
 
     def validate(self, form):

web/pgadmin/authenticate/kerberos.py

@@ -27,7 +27,6 @@ from pgadmin.utils.constants import KERBEROS, MessageType
 from pgadmin.utils import PgAdminModule
 from pgadmin.utils.ajax import make_json_response, internal_server_error
 
-
 from pgadmin.authenticate.internal import BaseAuthentication
 from pgadmin.authenticate import get_auth_sources
 from pgadmin.utils.csrf import pgCSRFProtect

web/pgadmin/authenticate/oauth2.py

@@ -275,6 +275,6 @@ class OAuth2Authentication(BaseAuthentication):
                 authorized_claims = [authorized_claims]
             if any(item in authorized_claims for item in claim):
                 reason = "Claim match found. Authorized access."
-                return (True, reason)
-        reason = f"No match was found."
-        return (False, reason)
+                return True, reason
+        reason = "No match was found."
+        return False, reason