chore(deps): raise SQLAlchemy lower bound to >=1.4.43

The python-oracledb (oracle+oracledb) dialect that the Oracle engine
spec now relies on was added in SQLAlchemy 1.4.43. The old `>=1.4`
floor allowed 1.4.0-1.4.42, where that dialect does not exist, so a
downstream resolver could install a SQLAlchemy that cannot connect to
Oracle. The lockfile already resolves to 1.4.54, so this is a no-op for
the pinned environment and only constrains library installs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

pyproject.toml

@@ -107,7 +107,7 @@ dependencies = [
     "sshtunnel>=0.4.0, <0.5",
     "simplejson>=4.1.1",
     "slack_sdk>=3.19.0, <4",
-    "sqlalchemy>=1.4, <2",
+    "sqlalchemy>=1.4.43, <2", # 1.4.43 adds the python-oracledb (oracle+oracledb) dialect
     "sqlalchemy-utils>=0.42.1, <0.43", # expanding lowerbound to work with pydoris
     "sqlglot>=30.8.0, <31",
     # newer pandas needs 0.9+