Fixes trigger for publish workflow (#415)

Signed-off-by: Sean Sundberg <seansund@us.ibm.com>

Author: Sean Sundberg

.github/workflows/publish.yaml

@@ -6,7 +6,7 @@ name: Publish
 on:
   # Triggers the workflow on push or pull request events but only for the "main" branch
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs: