updating security scan version

Signed-off-by: John McCrae <john.mccrae@progress.com>

Author: johnmccrae

.github/workflows/stubs/ci-main-pull-request-stub.yml

@@ -29,7 +29,7 @@ jobs:
           echo "CI main pull request stub version $STUB_VERSION"
 
   call-ci-main-pr-check-pipeline:
-    uses: chef/common-github-actions/.github/workflows/ci-main-pull-request.yml@main
+    uses: chef/common-github-actions/.github/workflows/ci-main-pull-request.yml@chef-19
     secrets: inherit
     permissions: 
       id-token: write