PP-15379 update github actions

Github retiring node20. Update actions to a node24 compatible version.

Author: SandorArpa

.github/workflows/_run-tests.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Git checkout
-        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Detect secrets
         uses: alphagov/pay-ci/actions/detect-secrets@master