main/gnutls: security upgrade to 3.6.15

- CVE-2020-24659

(cherry picked from commit 1c38dfee)
7 jobs for !12091 with 3.10-gnutls in 26 minutes and 59 seconds
detached
Status Job ID Name Coverage
  Lint
passed #199872
docker-alpine x86_64
lint

00:02:35

 
  Build
passed #199877
docker-alpine ci-build aarch64
build-aarch64

00:05:30

passed #199878
docker-alpine ci-build armv7
build-armv7

00:06:20

passed #199876
docker-alpine ci-build ppc64le
build-ppc64le

00:13:31

passed #199875
docker-alpine ci-build s390x
build-s390x

00:02:58

passed #199874
docker-alpine ci-build x86
build-x86

00:04:05

passed #199873
docker-alpine ci-build x86_64
build-x86_64

00:04:06