community/gnome-software: re-enable icons plugin

In the previous commit we fixed pixman, so we can enable the icon-plugin
again without GNOME Software crashing
7 jobs for !7202 with pixman in 6 minutes and 17 seconds
detached
Status Job ID Name Coverage
  Lint
passed #101109
docker-alpine x86_64
lint

00:00:24

 
  Build
passed #101114
docker-alpine ci-build aarch64
build-aarch64

00:02:33

passed #101115
docker-alpine ci-build armv7
build-armv7

00:05:52

passed #101113
docker-alpine ci-build ppc64le
build-ppc64le

00:04:44

passed #101112
docker-alpine ci-build s390x
build-s390x

00:00:32

passed #101111
docker-alpine ci-build x86
build-x86

00:03:48

passed #101110
docker-alpine ci-build x86_64
build-x86_64

00:03:00