MOD: Upgrade databento-dbn to 0.55.0

Author: nmacholl

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 #### Enhancements
 - Added new publisher values for OPRA MEMX MX2 Options and IEX Options
+- Upgraded `databento-dbn` to 0.55.0:
+  - Performance improvements to `DBNDecoder`
 
 ## 0.75.0 - 2026-04-07
 

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 = "~0.53.0"
+- databento-dbn = "~0.55.0"
 - 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~=0.53.0",
+    "databento-dbn~=0.55.0",
     "numpy>=1.23.5; python_version < '3.12'",
     "numpy>=1.26.0; python_version >= '3.12'",
     "pandas>=1.5.3,<4.0.0",