Update changelog.yml

Author: dshabin

.github/workflows/changelog.yml

@@ -10,14 +10,9 @@ jobs:
   sync:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-
-    # Convert to markdown first
-    # https://github.com/pandoc/pandoc-action-example
-    - uses: docker://pandoc/core:2.14
-      with:
-        args: "CHANGELOG.rst -f rst -t markdown -o CR_CHANGELOG.md"
-
     - uses: dropseed/changerelease@v1
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
+        # optional
+        tag_prefix: v
+        changelog: CHANGELOG.md