The source project of this merge request has been removed.
main/meson: downgrade to 0.54.3
Causes failures in libpeas&gjs (test failure) and completion failurse in vala-language-server
See https://gitlab.gnome.org/GNOME/gjs/-/issues/334 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965278