ci: pin instruction-file audit to App token (ENG-7621)

Author: nsportsman

.github/workflows/agents-md-audit.yml

@@ -7,10 +7,11 @@ concurrency:
   cancel-in-progress: true
 jobs:
   audit:
-    uses: praetorian-inc/public-workflows/.github/workflows/agents-md-audit.yml@a1c9243b3365df01b2ea64948f4327b4089455b0  # v2.19.1
+    uses: praetorian-inc/public-workflows/.github/workflows/agents-md-audit.yml@522f02d44dc72b199da3d6b8db755fe3aeabff1d  # v2.19.2
     permissions:
       contents: read
       pull-requests: write
     secrets:
       ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
-      RUBRIC_TOKEN: ${{ secrets.RUBRIC_TOKEN }}
+      PALATINE_SKILLS_APP_ID: ${{ secrets.PALATINE_SKILLS_APP_ID }}
+      PALATINE_SKILLS_PRIVATE_KEY: ${{ secrets.PALATINE_SKILLS_PRIVATE_KEY }}