1) Added support for setting PostgreSQL connection parameters. #4728

2) Fixed an issue where Kerberos authentication to the server is not imported/exported. #5732
3) Increase the length of the value column of the setting table. #5746
4) Upgrade Flask-Migrate to 4.0.0. #5525

web/pgadmin/__init__.py

@@ -608,7 +608,8 @@ def create_app(app_name=None):
                          port=port,
                          maintenance_db='postgres',
                          username=superuser,
-                         ssl_mode='prefer',
+                         connection_params={'sslmode': 'prefer',
+                                            'connect_timeout': 10},
                          comment=comment,
                          discovery_id=discovery_id)