workflows: bump Python to 3.14

Don't mandate 3.14 yet, to make things a bit easier for contributors.

Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>

Author: bgilbert

.github/workflows/validate.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
-          python-version: '3.13'
+          python-version: 3.14
       - name: Install dependencies
         run: python -m pip install pre-commit
       - name: Cache pre-commit environments

pyproject.toml

@@ -1,7 +1,7 @@
 [tool.black]
 line-length = 79
 skip-string-normalization = true
-target-version = ["py313"]
+target-version = ["py313", "py314"]
 
 # Ref: https://github.com/codespell-project/codespell#using-a-config-file
 [tool.codespell]