testing/svt-av1: upgrade to 0.8.3

Ref https://github.com/OpenVisualCloud/SVT-AV1/releases
7 jobs for !7178 with svt-av1 in 1 minute and 13 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
failed #100895
docker-alpine x86_64 allowed to fail
lint

00:00:10

 
  Build
failed #100900
docker-alpine ci-build aarch64
build-aarch64

00:00:34

failed #100901
docker-alpine ci-build armv7
build-armv7

00:00:08

failed #100899
docker-alpine ci-build ppc64le
build-ppc64le

00:00:10

failed #100898
docker-alpine ci-build s390x
build-s390x

00:00:07

failed #100897
docker-alpine ci-build x86
build-x86

00:00:08

failed #100896
docker-alpine ci-build x86_64
build-x86_64

00:00:07

 
Name Stage Failure
failed
lint Lint
No job log
failed
build-s390x Build
No job log
failed
build-x86_64 Build
No job log
failed
build-x86 Build
No job log
failed
build-ppc64le Build
No job log
failed
build-armv7 Build
No job log
failed
build-aarch64 Build
No job log