chore: no-op exception suppress

Signed-off-by: heitorlessa <lessa@amazon.co.uk>

Author: heitorlessa

aws_lambda_powertools/event_handler/middlewares/openapi_validation.py

@@ -1,3 +1,4 @@
+import contextlib
 import dataclasses
 import json
 import logging
@@ -385,12 +386,10 @@ def _normalize_multi_query_string_with_param(query_string: Optional[Dict[str, st
     """
     if query_string:
         for param in filter(is_scalar_field, params):
-            try:
+            with contextlib.suppress(KeyError):
                 # if the target parameter is a scalar, we keep the first value of the query string
                 # regardless if there are more in the payload
                 query_string[param.alias] = query_string[param.alias][0]
-            except KeyError:
-                pass
     return query_string