chore: use reusable Danger workflow (#2253)

Author: vaind

.github/workflows/danger.yml

@@ -1,16 +1,9 @@
-name: "Danger"
+name: Danger
+
 on:
   pull_request:
     types: [opened, synchronize, reopened, edited, ready_for_review]
 
 jobs:
-  build:
-    name: Changelog
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - run: npx danger ci
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  danger:
+    uses: getsentry/github-workflows/.github/workflows/danger.yml@v2