Add Python 3.14 test coverage

Author: simonkurtz-MSFT

.github/workflows/python-tests.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.12', '3.13' ]
+        python-version: [ '3.12', '3.13' , '3.14' ]
     steps:
       - uses: actions/checkout@v4
 
@@ -69,4 +69,4 @@ jobs:
           if grep -q 'failures="[1-9]' tests/python/junit-${{ matrix.python-version }}.xml; then
             echo "::error ::Unit tests failed. See above for details."
             exit 1
-          fi
+          fi