Update release.yml

allowing manually trigger workflow from browser

.github/workflows/release.yml

@@ -1,8 +1,5 @@
-on:
-  push:
-    # Sequence of patterns matched against refs/tags
-    tags:
-      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+on: workflow_dispatch
+
 jobs:
   build-package:
     runs-on: ubuntu-latest
@@ -38,4 +35,4 @@ 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: ./gng-installer.sh
           asset_name: gng-installer.sh
-          asset_content_type: application/x-makeself .run
+          asset_content_type: application/x-makeself .run