Merge pull request #1643 from tskit-dev/dependabot/pip/python/requirements/CI-tests-pip/h5py-3.4.0

Bump h5py from 3.3.0 to 3.4.0 in /python/requirements/CI-tests-pip

Author: mergify[bot]

python/requirements/CI-tests-pip/requirements.txt

@@ -2,7 +2,7 @@ numpy==1.21.2
 pytest==6.2.4
 pytest-xdist==2.3.0
 jsonschema==3.2.0
-h5py==3.3.0
+h5py==3.4.0
 svgwrite==1.4.1
 portion==2.1.6
 xmlunittest==0.5.0