Update actions/checkout action to v4 (#13305)

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

Author: renovate[bot]

.github/workflows/sdkman.yml

@@ -12,7 +12,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         with:
           token: ${{ secrets.GH_TOKEN }}
           ref: v${{ github.event.inputs.version }}