chore(deps): update actions/checkout action to v5

.github/workflows/main.yaml

@@ -13,7 +13,7 @@ jobs:
   lint-frontend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: pnpm/action-setup@v4
         with:
           package_json_file: "frontend/package.json"
@@ -26,7 +26,7 @@ jobs:
   lint-backend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.24'
@@ -41,7 +41,7 @@ jobs:
   test-frontend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: pnpm/action-setup@v4
         with:
           package_json_file: "frontend/package.json"
@@ -54,7 +54,7 @@ jobs:
   test-backend:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-go@v5
         with:
           go-version: '1.24'
@@ -71,7 +71,7 @@ jobs:
     needs: [lint, test]
     if: startsWith(github.event.ref, 'refs/tags/v')
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: actions/setup-go@v5

.github/workflows/site-pr.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2

.github/workflows/site-publish.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2