Fix lint

Author: rads-1996

instrumentation/opentelemetry-instrumentation-django/src/opentelemetry/instrumentation/django/middleware/otel_middleware.py

@@ -177,15 +177,15 @@ class _DjangoMiddleware(MiddlewareMixin):
 
     @staticmethod
     def format_request_objects_in_headers(attributes):
-        for key, value_list in attributes.items():
-            for i, value in enumerate(value_list):
+        for _, value_list in attributes.items():
+            for index, value in enumerate(value_list):
                 if isinstance(value, HttpRequest):
                     try:
                         method = getattr(value, "method", "UNKNOWN")
                         request_path = getattr(value, "path", "UNKNOWN")
-                        value_list[i] = f"HttpRequest({method} {request_path})"
-                    except Exception:
-                        value_list[i] = "HttpRequest(...)"
+                        value_list[index] = f"HttpRequest({method} {request_path})"
+                    except Exception: # pylint: disable=broad-exception-caught
+                        value_list[index] = "HttpRequest(...)"
         return attributes
 
     @staticmethod