Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
       - name: Build image
         run: docker build . --tag lsyncd
       - name: Show image info

.github/workflows/deploy.yml

@@ -9,7 +9,7 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2