fix(deps): Update dependency pytz to v2023.3.post1 (#60)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [pytz](http://pythonhosted.org/pytz) | patch | `==2023.3` -> `==2023.3.post1` |

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Author: cq-bot

setup.py

@@ -26,7 +26,7 @@
     "pyarrow==12.0.1",
     "pytest==7.4.2",
     "python-dateutil==2.8.2",
-    "pytz==2023.3",
+    "pytz==2023.3.post1",
     "six==1.16.0",
     "structlog==23.1.0",
     "tomli==2.0.1",