CI: update actions (#836)

Author: mergify[bot]

.github/workflows/docker.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - name: Delete Untagged Images
         if: (github.event_name == 'schedule')
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.DELETE_PACKAGES_TOKEN }}
           script: |