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

Author: renovate[bot]

.github/workflows/build-latest-docker-image.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout and download repository to workflow runner
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Set up docker builder
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1

.github/workflows/build-published-docker-image.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout and download repository to workflow runner
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
 
       - name: Set up docker builder
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1