Add Python 3.14 to syntax check.

Author: MikuAuahDark

.github/workflows/syntax-check.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.12', '3.13']
+        python-version: ['3.12', '3.13', '3.14']
     steps:
       - name: Setup Python
         uses: actions/setup-python@v5