chore(deps): Update dependency libsdl-org/SDL to release-3.4.18

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This PR contains the following updates:

Package	Update	Change
libsdl-org/SDL	patch	release-3.4.16 → release-3.4.18

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Release Notes

libsdl-org/SDL (libsdl-org/SDL)

vrelease-3.4.18: 3.4.18

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This is a stable bugfix release, with the following changes:

• Fixed crashing at startup if a broken EZFRD64.DLL is installed
• Fixed a crash at shutdown if X11 IME services restarted during the session
• Fixed KMSDRM initialization on some systems including i.MX 6 hardware
• Fixed texture alpha blending and texel centering when rendering on PS2
• Implemented joystick hotplugging on PS2
• Added SDL_GAMEPAD_TYPE_STEAM for Steam Controllers
• Fixed the Steam Controller showing up twice on macOS 27
• Added support for the Flydigi Apex 6 controller
• Fixed the Keychron Q6 System Control showing up as a gamepad
• Fixed relative mouse clicks showing as key presses on some Android devices
• The pen device type is included with pen events
• Correctly report the eraser in pen events on Wayland
• Fixed handling time values before the UNIX epoch (January 1, 1970)

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