Update python-scanner.yaml

- Fix minor syntax in last update

file/python/python-scanner.yaml

@@ -38,19 +38,17 @@ file:
           - 'pickle\.loads'
           - 'c?Pickle\.loads?'
           - 'marshal\.loads'
-          - 'pickle\.Unpickler
+          - 'pickle\.Unpickler'
 
       - type: regex
         name: dangerous-yaml
         regex:
-          regex:
           - 'yaml\.load'
           - 'yaml\.safe_load'
 
       - type: regex
         name: sqli
         regex:
-          regex:
           - 'cursor\.execute'
           - 'sqlite3\.execute'
           - 'MySQLdb\.execute'