Use py 3.12 for doc building

Author: bobleesj

.github/workflows/publish-docs-on-release.yml

@@ -25,7 +25,7 @@ jobs:
           auto-update-conda: true
           environment-file: environment.yml
           auto-activate-base: false
-          python-version: 3.13
+          python-version: 3.12
 
       - name: Conda config
         run: >-