simplify our dependabot auto-merge system

.github/workflows/auto-approve.yml

@@ -3,10 +3,23 @@ name: Auto Approve Dependabot PRs
 on: pull_request
 
 jobs:
-  auto-approve:
+  auto-update-dependabot:
+    name: Auto-Approve and enable Auto-Merge for all Dependabot PRs
     runs-on: ubuntu-latest
     steps:
-      - uses: hmarr/auto-approve-action@v2.0.0
-        if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
-        with:
-          github-token: "${{ secrets.ORIGAMI_FOX_ACCESS_TOKEN }}"
+    - id: auto-approve-dependabot
+      uses: hmarr/auto-approve-action@v2.0.0
+      if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+      with:
+        github-token: "${{ secrets.ORIGAMI_FOX_ACCESS_TOKEN }}"
+    - name: Checkout
+      uses: actions/checkout@master
+      if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+      with:
+        fetch-depth: 1
+    - id: enable-automerge
+      name: Enable Github Automerge
+      if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+      uses: alexwilson/enable-github-automerge-action@1.0.0
+      with:
+        github-token: "${{ secrets.ORIGAMI_FOX_ACCESS_TOKEN }}"