Bump checkout action to v6

Author: ariya

.github/workflows/fly-deploy.yml

@@ -12,7 +12,7 @@ jobs:
     concurrency: deploy-group
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Flyctl
         uses: superfly/flyctl-actions/setup-flyctl@master

.github/workflows/publish-container.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Log in to the Container registry
         uses: docker/login-action@v3

.github/workflows/test-bun.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: oven-sh/setup-bun@v1
         with:

.github/workflows/test-deno.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: denoland/setup-deno@v2
         with:

.github/workflows/test-docker.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - run: docker build -t hello-nodejs .
 

.github/workflows/test-nodejs.yml

@@ -15,7 +15,7 @@ jobs:
         nodejs-version: [24, 22, 20, 18]
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js ${{ matrix.nodejs-version }}
         uses: actions/setup-node@v4

.github/workflows/test-podman.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - run: podman build -t hello-nodejs .