Fix CVE-2019-5010

• Bump PORTREVISION for package change

Obtained from: https://github.com/python/cpython/commit/216a4d83c3b72f4fdcd81b588dc3f42cc461739a
Reference: https://bugs.python.org/issue35746
Security: d74371d2-4fee-11e9-a5cd-1df8a848de3d
MFH: 2019Q1