chore: simplify branch triggers in publish-cohere workflow

- Updated the branch triggers in the publish-cohere.yaml workflow to only include the 'cohere' branch, removing the 'cohere-release' branch. This change streamlines the workflow's execution conditions.

Author: yousef-cohere

.github/workflows/publish-cohere.yaml

@@ -23,7 +23,7 @@ name: Publish (cohere)
 
 on:
   push:
-    branches: [cohere, cohere-release] # TODO: remove cohere-release before merge
+    branches: [cohere]
   workflow_dispatch:
 
 concurrency: