Tweak pandera dep pin in pyproject.toml

Newer version breaks some things...

Author: trey-stafford

pyproject.toml

@@ -31,7 +31,7 @@ dependencies = [
   "gps-timemachine >=1.1.4",
   "pyproj >=3.6.1",
   "shapely >=2.0.5",
-  "pandera[mypy] >= 0.20.3",
+  "pandera[mypy] ~= 0.20.3",
   "pydantic >=2.8.2",
   "loguru >=0.7.2",
   "dask[dataframe] >=2024.10.0",