Update build.yml

Author: slashben

.github/workflows/build.yml

@@ -45,3 +45,4 @@ jobs:
         upload_url: ${{ steps.create_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: ./kubenventoree
         asset_name: kubenventoree
+        asset_content_type: application/octet-stream