ci: setup auto-merge (#31)

.github/dependabot.yml

@@ -0,0 +1,22 @@
+version: 2
+updates:
+  # Enable version updates for npm
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+    groups:
+      react-dependencies:
+        patterns:
+          - 'react*'
+          - '@types/react*'
+        exclude-patterns:
+          - 'react-router-dom'
+      storybook-group:
+        patterns:
+          - 'storybook*'
+          - '@storybook/*'
+      eslint-group:
+        patterns:
+          - 'eslint*'
+          - '@typescript-eslint/*'

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

@@ -0,0 +1,23 @@
+name: Dependabot auto-merge
+on: pull_request
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1
+        with:
+          github-token: '${{ secrets.GITHUB_TOKEN }}'
+      - name: Enable auto-merge for Dependabot PRs
+        if: contains(steps.metadata.outputs.dependency-names, 'my-dependency') && steps.metadata.outputs.update-type == 'version-update:semver-patch'
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}