Bump actions/checkout from 4 to 5 (#220)

Author: dependabot[bot]

.github/workflows/image.yml

@@ -15,7 +15,7 @@ jobs:
         - "5"
         - "5/fastcgi"
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Build the image.
       id: build
       run: |