Update dependabot pipeline

.github/dependabot.yml

@@ -6,3 +6,6 @@ updates:
     interval: daily
     time: "20:00"
   open-pull-requests-limit: 10
+  commit-message:
+      # Prefix all commit messages with "[cargo] " (no colon, but a trailing whitespace)
+      prefix: "[cargo] "

.github/workflows/dependabot_automerge.yml

@@ -0,0 +1,26 @@
+name: Auto Merge Dependabot PRs
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+
+jobs:
+  auto-merge:
+    name: Auto-merge dependabot PRs
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Auto-merge PR if it bumps the clap dependency
+        uses: pascalgn/automerge-action@v0.15.4
+        env:
+          GITHUB_TOKEN: ${{ secrets.ACTIONS_TOKEN }}
+        with:
+          merge-method: squash
+        #commit-message: "Auto-merged PR"
+        #title: "^Bump clap from .*$"