community/php7-pecl-imagick: add imagemagick dependency as no formats supported without it

Fixes #11522
Status Job ID Name Coverage
  Lint
passed #116532
docker-alpine x86_64
lint

00:00:19

 
  Build
passed #116537
docker-alpine ci-build aarch64
build-aarch64

00:02:48

passed #116538
docker-alpine ci-build armv7
build-armv7

00:03:14

passed #116536
docker-alpine ci-build ppc64le
build-ppc64le

00:03:31

passed #116535
docker-alpine ci-build s390x
build-s390x

00:01:33

passed #116534
docker-alpine ci-build x86
build-x86

00:02:23

passed #116533
docker-alpine ci-build x86_64
build-x86_64

00:01:38