Add miniconda 4.3.21, remove miniconda 4.3.14
Add miniconda 4.3.21, remove miniconda 4.3.14

[#146711659]

Signed-off-by: Forest Eckhardt <80a01a39b47e90d75c15574c906d1a0f1709496a@gmail.com>

cloudfoundry/python-buildpack,cloudfoundry/python-buildpack,cloudfoundry/python-buildpack