Bring tested versions up to date

When we generate the library, we test against all the supported versions, but
not in the public repo.

Author: jamiecobbett

.github/workflows/publish.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.12]
+        python-version: [3.10, 3.11, 3.12, 3.13, 3.14]
 
     steps:
       - uses: actions/checkout@v2