fix(deps): Update dependency pyarrow to v21 (#339)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: cq-bot

setup.py

@@ -23,7 +23,7 @@
     "pandas==2.3.3",
     "pluggy==1.6.0",
     "protobuf>=6.31.1",
-    "pyarrow==19.0.1",
+    "pyarrow==21.0.0",
     "pytest==8.4.2",
     "python-dateutil>=2.8.1",
     "pytz==2025.2",