ci: test 3.14 and remove 3.9 and update dependencies

Author: Otto-AA

.github/workflows/tests.yml

@@ -5,18 +5,17 @@ on: [push, pull_request]
 jobs:
   tests:
     name: Test Python ${{ matrix.python-version }}
-    # Todo: Revert to ubuntu-latest when Python 3.7 support no longer needed
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.13", "3.12", "3.11", "3.10", "3.9"]
+        python-version: ["3.14", "3.13", "3.12", "3.11", "3.10"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}