[manylinux2014] CPython 3.6.11 → 3.6.12 & 3.7.8 → 3.7.9
[manylinux2014] CPython 3.6.11 → 3.6.12 & 3.7.8 → 3.7.9

Changelogs:

* https://docs.python.org/release/3.6.12/whatsnew/changelog.html
* https://docs.python.org/release/3.7.9/whatsnew/changelog.html

manylinux/manylinux,pypa/manylinux,pypa/manylinux,manylinux/manylinux,pypa/manylinux