gnome: Fix typo in _get_dependencies_flags
gnome: Fix typo in _get_dependencies_flags

This was introduced in https://github.com/mesonbuild/meson/commit/823da3990947a8f4a2152826f0d7229f8a7a0159

mesonbuild/meson,pexip/meson,mesonbuild/meson,pexip/meson,pexip/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,pexip/meson,pexip/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,pexip/meson,pexip/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,mesonbuild/meson