Quick fix to GitHub Action

Made it safer to use the trigger word in commits by only checking if the message starts with it

.github/workflows/publish-updates.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   publish:
     runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, 'Update')"
+    if: "startsWith(github.event.head_commit.message, 'Update ')"
 
     permissions:
       contents: write