Fix action syntax

Author: marcorosa

.github/workflows/pr-bot.yml

@@ -12,9 +12,7 @@ jobs:
         with:
           aicore-service-key: ${{ secrets.AICORE_SERVICE_KEY }}
           model: gpt-4o
-          exclude-files:
-            - package-lock.json
-            - uv.lock
+          exclude-files: package-lock.json, uv.lock
   review:
     name: PR Review
     runs-on: [ubuntu-latest]
@@ -23,6 +21,4 @@ jobs:
         with:
           aicore-service-key: ${{ secrets.AICORE_SERVICE_KEY }}
           model: anthropic--claude-4-sonnet
-          exclude-files:
-            - package-lock.json
-            - uv.lock
+          exclude-files: package-lock.json, uv.lock