cmd/govulncheck/integration/stackrox-scanner: update expectations

Due to a new addition of unreviewed reports.

Change-Id: I4bbecf7bb600944cdec0fe61fce13372e6450f00
Reviewed-on: https://go-review.googlesource.com/c/vuln/+/590636
Auto-Submit: Zvonimir Pavlinovic <zpavlinovic@google.com>
Reviewed-by: Maceo Thompson <maceothompson@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Zvonimir Pavlinovic <zpavlinovic@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Author: zpavlinovic

cmd/govulncheck/integration/stackrox-scanner/scanner.go

@@ -28,6 +28,7 @@ func main() {
 		"github.com/go-git/go-git/v5/plumbing/object":           true,
 		"github.com/go-git/go-git/v5/storage/filesystem":        true,
 		"github.com/go-git/go-git/v5/storage/filesystem/dotgit": true,
+		"github.com/mholt/archiver/v3":                          true,
 		"golang.org/x/crypto/ssh":                               true,
 		"golang.org/x/net/http2":                                true,
 		"golang.org/x/net/http2/hpack":                          true,