Add release notes step in GH Actions (#581)

Instead of using a Github App on the repo, we can move to use the new GH Action release-drafter so the release notes are updated on every merge to master

Author: smyrick

.github/workflows/continuous-integration.yml

@@ -41,3 +41,11 @@ jobs:
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           yml: ./codecov.yml
+
+  release-notes:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Release Drafter
+        uses: release-drafter/release-drafter@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}