Update create-envfile.py (#565)

Author: mattiagiupponi

create-envfile.py

@@ -42,13 +42,8 @@ def shuffle(chars):
     random.shuffle(chars_as_list)
     return "".join(chars_as_list)
 
-
 _simple_chars = shuffle(string.ascii_letters + string.digits)
-_strong_chars = shuffle(
-    string.ascii_letters
-    + string.digits
-    + string.punctuation.replace('"', "").replace("'", "").replace("`", "")
-)
+_strong_chars = shuffle(string.ascii_letters + string.digits + "#%*._~")
 
 
 def generate_env_file(args):