🤖 @dependabot config (#53)

Co-authored-by: octoherd-stoe[bot] <121860383+octoherd-stoe[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -7,16 +7,14 @@ updates:
       day: 'saturday'
       timezone: 'Europe/Berlin'
     commit-message:
-      prefix: '🆙 action'
+      prefix: '⬆️ action'
     labels:
       - 'github-action :robot:'
 
   - package-ecosystem: 'gomod'
     directory: '/'
     schedule:
-      interval: 'weekly'
-      day: 'saturday'
-      timezone: 'Europe/Berlin'
+      interval: 'monthly'
     commit-message:
       prefix: '🆙 go'
       include: 'scope'

.github/workflows/dependabot-combine-prs.yml

@@ -0,0 +1,23 @@
+name: combine-dependabot-prs
+
+on:
+  schedule:
+    # run every Friday at 00:42 UTC
+    - cron: '42 0 * * 5'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+  checks: read
+
+jobs:
+  combine-prs:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: combine-prs
+        id: combine-prs
+        uses: github/combine-prs@8e631fc3eb9337039c61b2b89219bf2a2259a4d6
+        with:
+          pr_title: 🤖 Combined Dependabot PRs