community/glibd: enable on aarch64

it's been disabled via b69976ed

fron builder's log

Found pkg-config: /usr/bin/pkg-config (1.8.0)
Run-time dependency glib-2.0 found: YES 2.70.0
Run-time dependency gmodule-2.0 found: YES 2.70.0
Run-time dependency gobject-2.0 found: YES 2.70.0
Run-time dependency gio-2.0 found: YES 2.70.0
Run-time dependency gobject-introspection-1.0 found: YES 1.70.0
Program girtod found: YES (/usr/bin/girtod)
Message: Generating D interfaces from GIR...

meson.build:35:4: ERROR: Problem encountered: Unable to build D intefaces from GIR:
Error /home/buildozer/aports/community/glibd/src/GlibD-2.3.0/src/APILookupGLib.txt(1988): Unknown function string_new


A full log can be found at /home/buildozer/aports/community/glibd/src/GlibD-2.3.0/output/meson-logs/meson-log.txt
>>> ERROR: glibd: build failed