sync action workflow fail-fast to match root workflow

the root workflow was updated to fail-fast: true but the action
workflow wasn't updated to match. the ci consistency test enforces
they stay in sync.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
       contents: read
       id-token: write
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         agent: [claude, codex, cursor, gemini, opencode]
         test:
@@ -55,7 +55,7 @@ jobs:
       contents: read
       id-token: write
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         test:
           [