Add Dependabot auto-merge workflow

Author: markwhitaker

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

@@ -0,0 +1,14 @@
+name: Auto-merge Dependabot PR (minor)
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronize, ready_for_review]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  auto-merge:
+    uses: markwhitaker/shared-workflows/.github/workflows/dependabot-auto-merge-minor-patch.yml@main
+    with:
+      pr-number: ${{ github.event.pull_request.number }}