databento-dbn: Add version 0.70.0 (#2096)

Author: riseproject-dev[bot]

docs/packages/databento-dbn.yaml

@@ -38,3 +38,4 @@ versions:
   - filename: databento_dbn-0.69.0-cp314-cp314-manylinux_2_39_riscv64.whl
     sha256: 33736b364b9efa522bb9f8c0526c1b68bb94dfbb051c799b851d5d659d6683e6
     requires-python: '>=3.10'
+- version: 0.70.0