Fix lint test

Author: barnabasdomozi

web/server/codechecker_server/session_manager.py

@@ -433,7 +433,7 @@ def resolve_variables(d):
             items = d.items() if isinstance(d, dict) else enumerate(d)
 
             for k, v in items:
-                if isinstance(v, dict) or isinstance(v, list):
+                if isinstance(v, (dict, list)):
                     resolve_variables(v)
                 elif isinstance(v, str):
                     secret_matched = secret_re.search(v)