Update .zenodo.json with complete schema from https://zenodo.org/schemas/records/record-v1.0.0.json

eossr/metadata/tests/test_schema.py

+from eossr.metadata import schema
+
+
+def test_codemeta():
+    meta = schema.codemeta()
+    assert meta['@context']['codemeta'] == "https://codemeta.github.io/terms/"
+
+def test_zenodo():
+    meta = schema.zenodo()
+    assert meta['$schema'] == 'http://json-schema.org/draft-04/schema#'
\ No newline at end of file