Trying python 3.12.3

Author: Robert McLay

.github/workflows/docs.yml

@@ -7,10 +7,10 @@ jobs:
       steps:
       - name: Checkout code
         uses: actions/checkout@v4
-      - name: Set up Python 3.12
+      - name: Set up Python 3.12.3
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.12.3
       - name: install sphinx
         run: |
           cd docs