Use Python 3.13 on netlify (#66)

Author: jarrodmillman

netlify.toml

@@ -1,5 +1,5 @@
 [build.environment]
-  PYTHON_VERSION = "3.8" # netlify currently only support 2.7 and 3.8
+  PYTHON_VERSION = "3.13"
   HUGO_VERSION = "0.134.3"
   DART_SASS_VERSION = "1.77.5"
   DART_SASS_URL = "https://github.com/sass/dart-sass/releases/download/"