fix: Relax python-dateutil version requirement (#203)

This is intended to allow the Square plugin to update to the latest SDK, see https://github.com/cloudquery/cloudquery/actions/runs/9837228486/job/27154578502#step:4:89

Author: erezrokah

setup.py

@@ -25,7 +25,7 @@
     "protobuf==5.27.2",
     "pyarrow==16.1.0",
     "pytest==8.2.2",
-    "python-dateutil==2.9.0.post0",
+    "python-dateutil>=2.8.1",
     "pytz==2024.1",
     "six==1.16.0",
     "structlog==24.2.0",