chore(dependabot): update schedule to daily and set open pull requests limit (#333)

Author: bednar

.github/dependabot.yml

@@ -2,5 +2,6 @@ version: 2
 updates:
   - package-ecosystem: "maven"
     directory: "/"
+    open-pull-requests-limit: 10
     schedule:
-      interval: "weekly"
+      interval: "daily"

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

@@ -0,0 +1,32 @@
+name: Auto-merge Dependabot PRs
+
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronize, ready_for_review, labeled]
+
+jobs:
+  automerge:
+    if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+      checks: read
+    steps:
+      - name: Fetch Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Approve PR
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: gh pr review --approve "$PR_URL"
+
+      - name: Enable auto-merge
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: gh pr merge --auto --squash "$PR_URL"