What's new in the WebKitGTK 2.48.4 release?
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  - Improve emoji font selection with USE_SKIA=ON.
  - Improve playback of multimedia streams from blob URLs.
  - Fix the build with USE_SKIA_OPENTYPE_SVG=ON and
    USE_SYSPROF_CAPTURE=ON.
  - Fix the build on LoongArch with USE_SKIA=ON.
  - Fix crash when using a WebKitWebView widget in an offscreen window.
  - Fix several crashes and rendering issues.