Added Python 3.14 to test matrix and updated to latest setup-python

Author: agronholm

.github/workflows/test-suite.yml

@@ -14,11 +14,11 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: "actions/checkout@v4"
-      - uses: "actions/setup-python@v4"
+      - uses: "actions/setup-python@v5"
         with:
           python-version: "${{ matrix.python-version }}"
           allow-prereleases: true