testing/svt-av1: upgrade to 0.8.2

Ref https://github.com/OpenVisualCloud/SVT-AV1/releases
7 jobs for !7011 with svt-av1 in 1 minute and 22 seconds
detached
Status Job ID Name Coverage
  Lint
passed #97295
docker-alpine x86_64
lint

00:00:23

 
  Build
passed #97300
docker-alpine ci-build aarch64
build-aarch64

00:00:25

passed #97301
docker-alpine ci-build armv7
build-armv7

00:00:57

passed #97299
docker-alpine ci-build ppc64le
build-ppc64le

00:00:39

passed #97298
docker-alpine ci-build s390x
build-s390x

00:00:21

passed #97297
docker-alpine ci-build x86
build-x86

00:00:20

passed #97296
docker-alpine ci-build x86_64
build-x86_64

00:00:38