ci: Do not download subprojects
Breaks on various CI infrastructure.
builddir=$( mktemp -d build_XXXXXX )
srcdir=$( pwd )
-meson --prefix /usr "$@" ${builddir} ${srcdir} || exit $?
+meson --prefix /usr --wrap-mode=nodownload "$@" ${builddir} ${srcdir} || exit $?
cd ${builddir}
