Add Python version matrix to test-api job

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: GeekTrainer

.github/workflows/run-tests.yml

@@ -12,14 +12,18 @@ permissions:
 jobs:
   test-api:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ['3.12', '3.13', '3.14']
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
-          python-version: '3.14'
+          python-version: ${{ matrix.python-version }}
           cache: 'pip'
 
       - name: Install dependencies