chore(deps): update actions/checkout action to v6 (#125)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/wsf-pin-sha.yml

@@ -31,7 +31,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Check out the Renovate branch
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: ${{ github.ref_name }}