HARMONY-1646: Update supported Python versions to 3.9 through 3.13.

Author: chris-durbin

.github/workflows/tests.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: [3.8, 3.9, '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v4

README.md

@@ -12,7 +12,7 @@ We welcome feedback on Harmony-Py via [GitHub Issues](https://github.com/nasa/ha
 
 ## Prerequisites
 
-* Python 3.8 through 3.11 (other versions are end of life or untested)
+* Python 3.9 through 3.13 (other versions are end of life or untested)
 
 
 ## Installing
@@ -28,7 +28,7 @@ This will install harmony-py and its dependencies into your current Python envir
 
 ## Prerequisites
 
-* Python 3.8 through 3.11, ideally installed via a virtual environment
+* Python 3.9 through 3.13, ideally installed via a virtual environment
 
 
 ## Installing Development & Example Dependencies

pyproject.toml

@@ -13,17 +13,18 @@ authors = [
 ]
 readme = "README.md"
 license = {file = "LICENSE"}
-requires-python = ">=3.8, <4"
+requires-python = ">=3.9, <4"
 keywords = ["nasa", "harmony", "remote-sensing", "science", "geoscience"]
 classifiers = [
     'Development Status :: 3 - Alpha',
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3 :: Only",
 ]
 dynamic = ["version"]