What's new in the WebKitGTK 2.40.3 release?
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  - Make memory pressure monitor honor memory.memsw.usage_in_bytes if exists.
  - Include key modifiers in wheel events.
  - Apply cookie blocking policy to WebSocket handshakes.
  - Remove accidental dependency on GLib 2.70.
  - Fix the build with BUBBLEWRAP_SANDBOX disabled.
  - Fix several crashes and rendering issues.