Add automerge for dependabot

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

.github/workflows/autoApproveDependabot.yml

@@ -0,0 +1,11 @@
+name: Auto approve
+on: pull_request
+
+jobs:
+    auto-approve:
+        runs-on: ubuntu-latest
+        steps:
+            -   uses: hmarr/auto-approve-action@v2.0.0
+                if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+                with:
+                    github-token: "${{ secrets.DEPENDABOT_AUTOMERGE_TOKEN }}"