chore(deps): update github actions to v6

Author: renovate[bot]

.github/workflows/docker-image.yaml

@@ -20,7 +20,7 @@ jobs:
         - 1.23
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Docker meta
         id: meta

.github/workflows/test.yaml

@@ -5,9 +5,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Setup Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: '1.23'
         cache-dependency-path: ./go.mod