Fix arm64 CI build

4 jobs for master in 1 minute and 53 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Pkgsrc
passed #12098
build_pkgsrc:stretch

00:00:19

 
  Build Pkg
passed #12099
amd64
build_pkg:stretch:amd64

00:01:34

failed #12100
arm64
build_pkg:stretch:arm64

00:00:13

 
  Upload Pkg
skipped #12101
upload_pkg
 
Name Stage Failure
failed
build_pkg:stretch:arm64 Build Pkg
Checking out af68eea3 as master...
Removing build-deb/
Skipping Git submodules setup
Downloading artifacts for build_pkgsrc:stretch (12098)...
Downloading artifacts from coordinator... ok id=12098 responseStatus=200 OK token=xxNcN724
Authenticating with credentials from job payload (GitLab Registry)
$ ./install_restic_for_tests.sh
Unsupported architecture!
ERROR: Job failed: exit code 1