main/varnish: 7.0.0 release

A few things changed:
- pcre2 is now needed instead of pcre
- no more update_config_sub
- verbose test errors
- patch failing vtc (https://github.com/varnishcache/varnish-cache/issues/3698)
- main/varnish: verbose make check
- don't run tests on x86 (https://github.com/varnishcache/varnish-cache/issues/3697)
9 jobs for !25372 with varnish_7.0.0 in 6 minutes and 27 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Lint
passed lint #521335
docker-alpine x86_64

00:00:20

 
  Build
passed build-aarch64 #521340
docker-alpine ci-build aarch64

00:03:25

passed build-armhf #521342
docker-alpine ci-build armhf

00:03:17

passed build-armv7 #521341
docker-alpine ci-build armv7

00:03:18

passed build-ppc64le #521351
docker-alpine ppc64le ci-build

00:01:39

passed build-s390x #521338
docker-alpine ci-build s390x

00:04:26

passed build-x86 #521337
docker-alpine ci-build x86

00:00:53

passed build-x86_64 #521336
docker-alpine ci-build x86_64

00:02:10

failed build-ppc64le #521339
docker-alpine ci-build ppc64le

00:20:58