Update actions/setup-python digest to a26af69

Author: renovate[bot]

.github/workflows/benchmark.yaml

@@ -37,7 +37,7 @@ jobs:
           clean: true
 
       - name: Setup Python
-        uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
           python-version: "3.13"