aur sync fails due to gawk 5.4.0 update #1244
Description
gawk was updated to 5.4.0 in [core-testing], which seems to have broken aurutils:
$ aur sync --chroot --upgrade
==> Using [custom] repository
-> bin-cpuflags-x86 1.0.8-2 -> 1.0.8-3
==> Retrieving package files
fetch: bin-cpuflags-x86: already up to date
gawk: /usr/lib/aurutils/aur-graph:72: delete(arch)
gawk: /usr/lib/aurutils/aur-graph:72: ^ syntax error
sync: failed to verify dependency graph
This is fixable by reverting back to gawk 5.3.2.