chore: update retention days for commit context artifacts

Author: Zzackllack

.github/workflows/release-on-tag.yml

@@ -137,7 +137,7 @@ jobs:
           path: |
             commit_context.json
             llm_release_context.md
-            retention-days: 7
+          retention-days: 7
 
   generate-release-notes:
     name: Generate Release Notes With Gemini