community/nextcloud-client: disable built-in update check

We don't want users to receive a notification to update while it's not
available in our repositories yet
7 jobs for !4230 with community_nextcloud-client in 3 minutes and 50 seconds
detached
Status Job ID Name Coverage
  Lint
passed #52053
docker-alpine x86_64
lint

00:00:25

 
  Build
passed #52058
docker-alpine ci-build aarch64
build-aarch64

00:03:02

passed #52059
docker-alpine ci-build armv7
build-armv7

00:03:22

passed #52057
docker-alpine ci-build ppc64le
build-ppc64le

00:00:43

passed #52056
docker-alpine ci-build s390x
build-s390x

00:00:23

passed #52055
docker-alpine ci-build x86
build-x86

00:01:43

passed #52054
docker-alpine ci-build x86_64
build-x86_64

00:01:35