fix(merge_consecutive_keyboard_events): Fix reference before assignment (#411)

Co-authored-by: Seyed Morteza Hosseini <[email protected]>

Author: mory91

openadapt/events.py

@@ -445,8 +445,8 @@ def get_merged_events(to_merge, state):
             # TODO: consolidate pattern with merge_consecutive_mouse_move_events
             if len(children) == 1:
                 # TODO: test
-                event = children[0]
-                event.timestamp -= state["dt"]
+                merged_event = children[0]
+                merged_event.timestamp -= state["dt"]
             else:
                 first_child = children[0]
                 last_child = children[-1]