ci: update python to 3.14

HA 2026.3 is now defaulting to 3.14, so follow that.

.github/workflows/jsontests.yml

@@ -23,7 +23,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.13']
+        python-version: ['3.14']
 
     env:
       UV_SYSTEM_PYTHON: 1

.github/workflows/linting.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v6
         with:
-          python-version: '3.13'
+          python-version: '3.14'
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7

.github/workflows/tests.yml

@@ -20,7 +20,7 @@ jobs:
       pull-requests: write
     strategy:
       matrix:
-        python-version: ['3.13']
+        python-version: ['3.14']
 
     env:
       UV_SYSTEM_PYTHON: 1

.github/workflows/yamltests.yml

@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.13']
+        python-version: ['3.14']
 
     env:
       PYTHONPATH: .