The host apparently has some test packages installed, but they cause a broken package state:
The following packages have unmet dependencies:
libvmod-re2 : Depends: libvarnishapi2 (>= 6.0.6-1wm1) but 6.0.4-1wm1 is installed
varnish-modules : Depends: libvarnishapi2 (>= 6.0.6-1wm1) but 6.0.4-1wm1 is installed
varnishkafka : Depends: varnish (>= 6.0.6-1wm1) but 6.0.4-1wm1 is installed
Depends: libvarnishapi2 (>= 6.0.6-1wm1) but 6.0.4-1wm1 is installed