Merge pull request caikit#771 from vajain-upstream/fix_publish_action

Set Python version to 3.12 in publish action

Author: gabe-l-hart

.github/workflows/build-library.yml

@@ -34,6 +34,8 @@ jobs:
             tox: 'py310'
           - setup: '3.11'
             tox: 'py311'
+          - setup: '3.12'
+            tox: 'py312'
           # Special matrix entry to ensure core tests pass without optional deps
           - setup: '3.8'
             tox: 'core'

.github/workflows/publish-library.yml

@@ -25,6 +25,8 @@ jobs:
       - uses: actions/checkout@v3
       - name: Set up Python
         uses: actions/setup-python@v3
+        with:
+          python-version: '3.12'
       - name: Build and check package
         run: |
           pip install tox