Require glib 2.64 and g-i 1.64
Since we now target Python 3.8+, looking at Debian and Ubuntu releases we have 1/2.64 in Ubuntu 20.04 and 1/2.66 in Debian bullseye. Go with the older one of the two.
Since we now target Python 3.8+, looking at Debian and Ubuntu releases we have 1/2.64 in Ubuntu 20.04 and 1/2.66 in Debian bullseye. Go with the older one of the two.