(PA-8446) Inherit secrets in nightly tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mhashizume

.github/workflows/daily_unit_tests_with_nightly_puppet_gem.yaml

@@ -9,6 +9,7 @@ on:
 jobs:
   daily_unit_tests_with_nightly_puppet_gem:
     uses: "puppetlabs/phoenix-github-actions/.github/workflows/unit_tests_with_nightly_puppet_gem.yaml@main"
+    secrets: inherit
 
   notify-via-slack:
     name: Notify workflow conclusion via Slack