Bump actions/checkout from 6 to 7 (#81)

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -79,7 +79,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4
@@ -176,7 +176,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4
@@ -210,7 +210,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Update Docker Hub description
         uses: peter-evans/dockerhub-description@v5