[actions] use shared action

.github/workflows/rebase.yml

@@ -2,21 +2,8 @@ name: Automatic Rebase
 
 on: [pull_request_target]
 
-permissions:
-  contents: read
-
 jobs:
   _:
-    permissions:
-      contents: write  # for ljharb/rebase to push code to rebase
-      pull-requests: read  # for ljharb/rebase to get info about PR
-
-    name: "Automatic Rebase"
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-      - uses: ljharb/rebase@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    uses: ljharb/actions/.github/workflows/rebase.yml@main
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}