Update actions/setup-python digest to 8d9ed9a (#2462)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>
Co-authored-by: Michael Wolf <[email protected]>

Author: elastic-renovate-prod[bot]

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     name: Unit Tests
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
-      - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5
         with:
           python-version: '3.x'
       - run: git fetch --prune --unshallow --tags