Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         fetch-depth: '0'
 
@@ -43,12 +43,12 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         fetch-depth: '0'
 
     - name: Checkout docker-netbootxyz for container source files
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         repository: netbootxyz/docker-netbootxyz
         path: docker-netbootxyz

.github/workflows/claude.yml

@@ -25,7 +25,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 1
 

.github/workflows/webapp-dev.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup Node.js
       uses: actions/setup-node@v5
@@ -27,10 +27,10 @@ jobs:
     needs: test  # Only build/push if tests pass
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Checkout docker-netbootxyz for container source files
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         repository: netbootxyz/docker-netbootxyz
         path: docker-netbootxyz