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

Bumps [h5py](https://github.com/h5py/h5py) from 3.0.0 to 3.1.0.
- [Release notes](https://github.com/h5py/h5py/releases)
- [Changelog](https://github.com/h5py/h5py/blob/master/docs/release_guide.rst)
- [Commits](h5py/h5py@3.0.0...3.1.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[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