MOD: Upgrade databento-dbn to 0.43.0

Author: nmacholl

CHANGELOG.md

@@ -7,6 +7,10 @@
 
 #### Enhancements
 - Added export of `CBBOMsg` and `BBOMsg` from `databento_dbn` to the root `databento` package
+- Upgraded `databento-dbn` to 0.43.0
+    - Added export of `F_PUBLISHER_SPECIFIC` constant to Python
+    - Added explicit `Unset` variant for `SystemCode` and `ErrorCode`
+    - Changed Python getters for enum fields to return the underlying type when no known variant can be found. As a result, these getters no longer raise an exception
 
 #### Breaking changes
 - Removed support for Python 3.9 due to end of life

README.md

@@ -32,7 +32,7 @@ The library is fully compatible with distributions of Anaconda 2023.x and above.
 The minimum dependencies as found in the `pyproject.toml` are also listed below:
 - python = "^3.10"
 - aiohttp = "^3.8.3"
-- databento-dbn = "~0.42.0"
+- databento-dbn = "~0.43.0"
 - numpy = ">=1.23.5"
 - pandas = ">=1.5.3"
 - pip-system-certs = ">=4.0" (Windows only)

pyproject.toml

@@ -17,7 +17,7 @@ classifiers = [
 dependencies = [
     "aiohttp>=3.8.3,<4.0.0; python_version < '3.12'",
     "aiohttp>=3.9.0,<4.0.0; python_version >= '3.12'",
-    "databento-dbn~=0.42.0",
+    "databento-dbn~=0.43.0",
     "numpy>=1.23.5; python_version < '3.12'",
     "numpy>=1.26.0; python_version >= '3.12'",
     "pandas>=1.5.3",