Pin Python 3.14 for pre-commit in CI.

Author: nkoukpaizan

.github/workflows/pre_commit.yaml

@@ -11,6 +11,9 @@ jobs:
       with:
         ref: ${{ github.event.pull_request.head.ref }}
     - uses: actions/setup-python@v3
+      with:
+        # TODO: Unpin after replacing cmake-format, which crashes on Python 3.15.
+        python-version: '3.14'
     - uses: pre-commit/action@v3.0.0
     - uses: EndBug/add-and-commit@v9.1.3
       # Only need to try and commit if the action failed