bump version of python

Author: levlaz

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           lfs: true
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v6
         with:
           python-version: 3.15
           cache: pipenv