correct multiline release notes for creating a release in github

Author: d-biehl

.github/workflows/build-test-package-publish.yml

@@ -281,7 +281,14 @@ jobs:
         id: get_release_notes
         run: |
           REL_NOTES="$(poetry run npm run --silent extract-release-notes)"
-          echo $REL_NOTES
+          echo "$REL_NOTES"
+
+          REL_NOTES="${REL_NOTES//'%'/'%25'}"
+          REL_NOTES="${REL_NOTES//$'\n'/'%0A'}"
+          REL_NOTES="${REL_NOTES//$'\r'/'%0D'}"
+
+          echo "$REL_NOTES"
+
           echo "::set-output name=release_notes::$REL_NOTES"
 
       - name: find assets