selftests/vsock: add 1.37 to tested virtme-ng versions

Testing with 1.37 shows all tests passing but emits the warning:

warning: vng version 'virtme-ng 1.37' has not been tested and may not function properly.
	The following versions have been tested: 1.33 1.36

This patch adds 1.37 to the virtme-ng versions to get rid of the above
warning.

Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20251108-vsock-selftests-fixes-and-improvements-v4-10-d5e8d6c87289@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/vsock/vmtest.sh

@@ -156,7 +156,7 @@ check_vng() {
 	local version
 	local ok
 
-	tested_versions=("1.33" "1.36")
+	tested_versions=("1.33" "1.36" "1.37")
 	version="$(vng --version)"
 
 	ok=0