Merge pull request #1058 from tskit-dev/dependabot/pip/python/requirements/CI-docs/h5py-3.1.0

Bump h5py from 3.0.0 to 3.1.0 in /python/requirements/CI-docs

Author: mergify[bot]

python/requirements/CI-docs/requirements.txt

@@ -1,7 +1,7 @@
 attrs==20.2.0
 autodocsumm==0.1.13 #Pinned as errors on 0.2.0
 breathe==4.23.0
-h5py==3.0.0
+h5py==3.1.0
 jsonschema==3.2.0
 numpy==1.19.4
 PyGithub==1.53