Auto merge all WPT and dependabot PRs (#32775)

* Auto merge all WPT and dependabot PRs

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* Adjust name of action

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>

.github/workflows/auto-merge-updates.yml

@@ -0,0 +1,18 @@
+name: Automerge Dependabot & WPT Updates
+on: pull_request
+
+permissions:
+  pull-requests: read
+
+jobs:
+  auto-merge:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]' || github.actor == 'servo-wpt-sync' }}
+    steps:
+      - name: Approve the PR & enable auto-merge
+        run: |
+          gh pr review --approve "$PR_URL"
+          gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.SERVO_DEPENDABOT_TOKEN }}

.github/workflows/dependabot-pr.yml

@@ -1,22 +0,0 @@
-name: Approve & merge successful dependabot patch upgrade PRs
-on: pull_request
-
-permissions:
-  pull-requests: read
-
-jobs:
-  dependabot:
-    runs-on: ubuntu-latest
-    if: ${{ github.actor == 'dependabot[bot]' }}
-    steps:
-      - name: Dependabot metadata
-        id: metadata
-        uses: dependabot/fetch-metadata@v1
-      - name: Approve the PR & enable auto-merge
-        if: ${{ steps.metadata.outputs.update-type == 'version-update:semver-patch' }}
-        run: |
-          gh pr review --approve "$PR_URL"
-          gh pr merge --auto --merge "$PR_URL"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GH_TOKEN: ${{secrets.SERVO_DEPENDABOT_TOKEN}}