Update actions/setup-python action to v5 (#2364)

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

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     name: Unit Tests
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
-      - uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2
+      - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5
         with:
           python-version: '3.x'
       - run: git fetch --prune --unshallow --tags