CI: update test matrix

Author: bcbnz

.github/workflows/ci-tests.yml

@@ -17,8 +17,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.12, 3.13]
-        matplotlib-version: [ "3.8.4", "3.10.6" ]
+        python-version: [3.12, 3.13, 3.14]
+        matplotlib-version: [ "3.9.4", "3.10.9" ]
 
     steps:
       - uses: actions/checkout@v5

.github/workflows/matplotlib-main.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.13
+          python-version: 3.14
           architecture: x64
 
       - name: Install system libraries