move more ci onto Python 3.14

Author: davidhewitt

.github/workflows/benches.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v6.0.0
       - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rust-src

.github/workflows/changelog.yml

@@ -12,6 +12,6 @@ jobs:
       - uses: actions/checkout@v6.0.0
       - uses: actions/setup-python@v6
         with:
-          python-version: '3.13'
+          python-version: '3.14'
       - run: python -m pip install --upgrade pip && pip install nox[uv]
       - run: nox -s check-changelog

.github/workflows/ci-cache-warmup.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v6.0.0
       - uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: "3.14"
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: x86_64-pc-windows-gnu,x86_64-pc-windows-msvc