Bump version of Python used in workflows

Author: movermeyer

.github/workflows/lint.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.13"
 
       - name: Install lint tools
         run: "pip install Pygments restructuredtext-lint"

.github/workflows/publish.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/setup-python@v5
         name: Install Python
         with:
-          python-version: "3.12"
+          python-version: "3.13"
 
       - run: |
           pip install packaging
@@ -167,7 +167,7 @@ jobs:
       - uses: actions/setup-python@v5
         name: Install Python
         with:
-          python-version: "3.12"
+          python-version: "3.13"
 
       - uses: actions/download-artifact@v4
         with: