ci/mac: disable unnecessary dependencies egl and x11 clipboard

if mesa is installed for KosmicKrisp it also installs dependencies that
are autodetected and basically useless on macOS. this leads +200mb of
dylibs when bundled.

for example:
libEGL.dylib > libgallium.dylib > libLLVM.dylib (+190mb)
libXfixes.dylib > libX11.dylib
libX11-xcb.dylib

Author: Akemi

ci/build-macos.sh

@@ -19,6 +19,7 @@ meson setup build $common_args \
   -D{plain-gl,rubberband,zimg,zlib}=enabled \
   -D{cocoa,coreaudio,gl-cocoa,videotoolbox-gl,videotoolbox-pl}=enabled \
   -D{swift-build,macos-cocoa-cb,macos-media-player,macos-touchbar,vulkan}=enabled \
+  -D{egl,x11-clipboard}=disabled \
   -Dswift-flags="${SWIFT_FLAGS}"
 
 meson compile -C build -j4