Merge pull request #640 from tskit-dev/dependabot/pip/python/requirements/CI/kastore-0.3.0

Bump kastore from 0.2.2 to 0.3.0 in /python/requirements/CI

Author: mergify[bot]

python/requirements/CI/requirements.txt

@@ -7,7 +7,7 @@ coverage==5.1
 flake8==3.8.2
 h5py==2.10.0
 jsonschema==3.2.0
-kastore==0.2.2
+kastore==0.3.0
 msgpack==1.0.0
 msprime==0.7.4
 networkx==2.4