run.py: default to using python 3

diff --git a/run.py b/run.py
index 7afe964953392786e964d47e0cc002cfc1cc65e9..7313d579908e48d11ffc56980581f1be574ded03 100755 (executable)
--- a/run.py
+++ b/run.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python2
+#! /usr/bin/env python3
 #
 # Copyright (C) 2017-2020 Open Information Security Foundation
 #