Fix Python version name

Author: aaltat

.github/workflows/pull_request.yml

@@ -17,7 +17,7 @@ jobs:
             python-version: '3.10'
           - name: Python 3.12
             python-version: '3.12'
-          - name: Python 3.14
+          - name: Python 3.13
             python-version: '3.13'
     steps:
       - name: Checkout code