chore(ci): upload CHANGELOG.md on release

Author: steabert

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
         release_name: Release ${{ github.ref }}
         draft: false
         prerelease: false
-    - name: Upload Release Asset
+    - name: Upload dist
       if: startsWith(github.ref, 'refs/tags/v') && matrix.node-version == '12'
       uses: actions/[email protected]
       env:
@@ -62,6 +62,16 @@ jobs:
         asset_path: dist/media-stream-library.min.js
         asset_name: media-stream-library.min.js
         asset_content_type: application/javascript
+    - name: Upload changelog
+      if: startsWith(github.ref, 'refs/tags/v') && matrix.node-version == '12'
+      uses: actions/[email protected]
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+        asset_path: CHANGELOG.md
+        asset_name: CHANGELOG.md
+        asset_content_type: text/markdown
     - name: Deploy NPM package
       if: startsWith(github.ref, 'refs/tags/v') && matrix.node-version == '12'
       env: