botocore 1.12.209 banned docutils 0.15 (docutils != 0.15) for wrong python 2
wheel which is already fixed [1][2]. And it does not affect FreeBSD ports users.
Later, botocore changed docutils from != 0.15 to < 0.15 [3].
Recent py-botocore update to 1.12.213 in r509585 fixes this problem since
upstream changed the docutils version from docutils>=0.10,<0.15 to
docutils>=0.10,<0.16.
While I'm here, mark the upper bound of RUN_DEPENDS of py-botocore to avoid
potential breakage in the future.
[1] https://github.com/aws/aws-cli/issues/4332
[2] https://sourceforge.net/p/docutils/bugs/365/
[3] add5c8b6b4
PR: 239664
Submitted by: sunpoet (myself)