[actions] clean up workflows

Author: ljharb

.github/workflows/node.yml

@@ -15,4 +15,4 @@ jobs:
     needs: [tests]
     runs-on: ubuntu-latest
     steps:
-      - run: 'echo tests completed'
+      - run: true

.github/workflows/rebase.yml

@@ -7,16 +7,7 @@ permissions:
 
 jobs:
   _:
-    permissions:
-      contents: write  # for ljharb/rebase to push code to rebase
-      pull-requests: read  # for ljharb/rebase to get info about PR
+    uses: ljharb/actions/.github/workflows/rebase.yml@main
+    secrets:
+      token: ${{ secrets.GITHUB_TOKEN }}
 
-    name: "Automatic Rebase"
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-      - uses: ljharb/rebase@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}