chore(deps): update workflow dependencies in mirror-osp-to-ooc.yaml

Author: Interested-Deving-1896

.github/workflows/mirror-osp-to-ooc.yaml

@@ -20,7 +20,7 @@ jobs:
     if: github.repository == 'OpenOS-Project-OSP/liqxanmod'
     steps:
       - name: Checkout full history
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -42,4 +42,4 @@ jobs:
           git push mirror --all --force
           git push mirror --tags --force
 
-          rm -f ~/.git-credentials
+          rm -f ~/.git-credentials