MOD: Upgrade databento-dbn to 0.52.0

Author: nmacholl

CHANGELOG.md

@@ -3,7 +3,13 @@
 ## 0.74.0 - TBD
 
 #### Enhancements
-- Changed `SlowReaderBehavior.SKIP` to send "skip" instead of "drop" to the gateway
+- Changed default of `Live` client `slow_reader_behavior` to `SlowReaderBehavior.SKIP` instead of `SlowReaderBehavior.DROP`
+- Upgraded `databento-dbn` to 0.52.0:
+  - Added `SYMBOL_CSTR_LEN` constant and versioned variants (`SYMBOL_CSTR_LEN_V1`,
+    `SYMBOL_CSTR_LEN_V2`, `SYMBOL_CSTR_LEN_V3`) to Python, including in each versioned
+    module (`v1`, `v2`, `v3`) as `SYMBOL_CSTR_LEN`
+  - Added `v1`, `v2`, and `v3` submodule imports to `databento_dbn.__init__` so they are
+    accessible as attributes (e.g. `databento_dbn.v1`)
 
 ## 0.73.0 - 2026-03-10
 

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 = "~0.51.0"
+- databento-dbn = "~0.52.0"
 - numpy = ">=1.23.5"
 - pandas = ">=1.5.3"
 - pip-system-certs = ">=4.0" (Windows only)

pyproject.toml

@@ -10,7 +10,7 @@ dynamic = [ "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~=0.51.0",
+    "databento-dbn~=0.52.0",
     "numpy>=1.23.5; python_version < '3.12'",
     "numpy>=1.26.0; python_version >= '3.12'",
     "pandas>=1.5.3,<4.0.0",