Maintain dev/prod parity by standardizing on Python 3.13

- Revert noxfile.py back to Python 3.13 to match local development environment
- Update GitHub Actions matrix to use Python 3.13 instead of older versions
- Ensures consistent behavior between local development and CI/CD pipeline
- All nox sessions (test, lint) now work consistently in both environments

Author: ericburcham

.github/workflows/python-build.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.13"]
 
     services:
       docker:

python/noxfile.py

@@ -6,8 +6,8 @@
 
 import nox
 
-# Python versions to test against (GitHub Actions supports these)
-PYTHON_VERSIONS = ["3.10", "3.11", "3.12"]
+# Python versions to test against
+PYTHON_VERSIONS = ["3.13"]
 PROJECT_ROOT = Path(__file__).parent
 SRC_DIR = PROJECT_ROOT / "src"
 TESTS_DIR = PROJECT_ROOT / "tests"