Add Python 3.14 to CI workflow matrix

Author: pgleeson

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     env:
       JNML_HOME: "/home/runner/work/NeuroMLlite/NeuroMLlite/jNeuroML"
       HDF5_DISABLE_VERSION_CHECK: 1