sameboy: Update to 0.12.3

Changes

  This version is backwards compatible with save states from SameBoy 0.11.x
  and newer.

  New/Improved Features

    * Super Game Boy color correction is now available in the libretro port
    * It is now possible to hide the Super Game Boy border in the libretro
      port
    * The SDL port will now hide the mouse while a ROM is running

  Accuracy Improvements/Fixes

    * Changing the frequency of channels 1 and 2 is now more accurate
    * Audio rendering should now be accurate when emulating Game Boy Advance

  Bug Fixes

    * Fixed garbled graphics while emulting Super Game Boy in the SDL port
      when OpenGL 3.2 is not available
    * The Cocoa build is now linked against the correct SDK version,
      restoring compatbility with older macOS versions that was mistakenly
      dropped in the previous release
    * Fixed fullscreen related issues in the SDL port
    * Fixed a bug where the SDL port did not save the battery in some cases
    * Bug fixes to libretro achievement support
    * Restored Game Boy Camera support on newer macOS versions
    * Fixed High-DPI support on Windows 10

  Misc Internal Changes

    * Improvements to the audio and ICD2 APIs
    * Allow compiling SameBoy for platforms with a non-standard bool size
    * Improved build portability, will now use pkg-config if available

(nia)