chore: adjust auto-assign behavior (#450)

.github/auto_assign.yml

@@ -2,13 +2,22 @@ addAssignees: author
 
 addReviewers: true
 
-reviewers:
-  - dkarnutsch
-  - fraxachun
-  - johnnyomair
-  - nsams
-  - thomasdax98
-  - manuelblum
+useReviewGroups: true
+
+reviewGroups:
+  default:
+    - dkarnutsch
+    - fraxachun
+    - johnnyomair
+    - nsams
+    - thomasdax98
+    - manuelblum
+  dependencyUpdates:
+    - johnnyomair
+    - thomasdax98
+    - manuelblum
+
+useAssigneeGroups: false
 
 skipKeywords:
   - Merge main into next

.github/workflows/assign-reviewers.yml

@@ -0,0 +1,31 @@
+name: Assign Reviewers Based on Author
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  assign_reviewers:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Assign reviewers for Renovate bot
+        if: github.actor == 'renovate[bot]'
+        uses: kentaro-m/auto-assign-action@v2.0.0
+        with:
+          config: ".github/auto_assign.yml"
+          reviewGroup: "dependencyUpdates"
+          addReviewers: true
+          addAssignees: false
+
+      - name: Assign default reviewers
+        if: github.actor != 'renovate[bot]'
+        uses: kentaro-m/auto-assign-action@v2.0.0
+        with:
+          config: ".github/auto_assign.yml"
+          reviewGroup: "default"
+          addReviewers: true
+          addAssignees: false