using description HTML file as-is for zenodo publish github action

.github/workflows/zenodo.yml

@@ -6,6 +6,9 @@ jobs:
   deploy:
     if: ${{ success() && contains(github.ref, 'refs/tags') }}
     runs-on: ubuntu-latest
+    env:
+      REPORTS_DIR: ${{ github.workspace }}/reports
+      CHANGES_HTML: ${{ github.workspace }}/reports/CHANGES_${{ github.ref_name }}.html
 
     steps:
     - uses: actions/checkout@v3
@@ -29,12 +32,8 @@ jobs:
     # prefer a partially generated release than none at all
     - name: Generate Changelog
       id: zenodo_metadata
-      env:
-        REPORTS_DIR: ${{ github.workspace }}/reports
-        CHANGES_HTML: ${{ github.workspace }}/reports/CHANGES_${{ github.ref_name }}.html
       run: |
         make generate-changes-html VERSION=${{ github.ref_name }} || true
-        echo "ZENODO_DESCRIPTION=$(cat ${{ env.CHANGES_HTML }} | tr -d '\n' || echo '')" >> $GITHUB_ENV
         cat ${{ env.CHANGES_HTML }}
 
     - name: Run Zenodo Publish
@@ -46,7 +45,7 @@ jobs:
         zenodo_json: .zenodo.json
         html_url: ${{ github.server_url }}/${{ github.repository }}/tree/${{ github.ref_name }}  # GitHub tag link
         archive: ${{ env.ZENODO_ARCHIVE }}
-        description: ${{ env.ZENODO_DESCRIPTION }}
+        description_file: ${{ env.CHANGES_HTML }}
 
         # DOI for all versions. Leaving this blank (the default) will create
         # a new DOI on every release. Use a DOI that represents all versions will