Upgrade checkout action from v4 to v5

Author: mohd-akram

.github/workflows/mirror.yml

@@ -19,7 +19,7 @@ jobs:
           # - https://chromium.googlesource.com/chromium/src/testing
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           submodules: recursive
       - name: Get repo name
@@ -33,7 +33,7 @@ jobs:
             printf '%s\n' '${{ steps.info.outputs.repo }}' |
             tr '[:lower:]-' '[:upper:]_'
           )" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           repository: gsource-mirror/${{ steps.info.outputs.repo }}
           path: ${{ steps.info.outputs.repo }}