safe load due to deprecation warning of pyaml 5.1

bin/yaml2json

@@ -4,4 +4,5 @@ import json
 import yaml
 import sys
 
-json.dump(yaml.load(sys.stdin), sys.stdout, indent=4, separators=(',', ': '))
+json.dump(yaml.load(sys.stdin, Loader=yaml.SafeLoader), sys.stdout, indent=4,
+          separators=(',', ': '))
\ No newline at end of file