Update python versions. Remove 3.8, add 3.13

Author: leosaffin

.github/workflows/python-package.yaml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v4

pyproject.toml

@@ -7,20 +7,15 @@ authors = [
   { name="Kelvin Ng" },
 ]
 description = "A python package for working with various forms of feature tracking data"
+requires-python = ">=3.9"
 dependencies = [
-    "numpy<2",
+    "numpy",
     "xarray",
     "cftime",
     "parse",
     "shapely",
     "pandas",
-    # Issue with newer versions of fiona when using old versions of geopandas
-    # see https://stackoverflow.com/a/78949565/8270394
-    # Normally just specify the newer geopandas, but it does not exist for python3.8
-    # so pin the version of fiona when using python3.8
-    "geopandas>=0.14.4;python_version>='3.9'",
-    "geopandas;python_version<'3.9'",
-    "fiona<=1.9.6;python_version<'3.9'",
+    "geopandas>=0.14.4",
     "matplotlib",
     "seaborn",
     "netcdf4",