Add py313 to CI, remove outdated Python versions

Author: wasade

.github/workflows/python-package-conda.yml

@@ -10,7 +10,7 @@ on:
 
 env:
   latest_python: "3.12"
-  supported_pythons: '["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]'
+  supported_pythons: '["3.9", "3.10", "3.11", "3.12", "3.13"]'
   miniforge_version: "22.9.0-2"
   miniforge_variant: "Mambaforge"
 

.github/workflows/release.yml

@@ -6,7 +6,7 @@ on:
       - '*'
 
 env:
-  earliest_python: "3.8"
+  earliest_python: "3.9"
   latest_python: "3.12"
   miniforge_version: "23.11.0-0"
   miniforge_variant: "Mambaforge"