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

Author: renovate[bot]

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

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -52,7 +52,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - uses: actions/setup-node@v5
         with:
           node-version: 22

.github/workflows/publish-docker-image.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3