release-notes: update release-notes.mdx

Refine the npm audit bullet to avoid internal CI implementation details and keep the description concise and user-focused, aligning with the release notes style guide.

Author: sg-doc-holiday[bot]

release-notes.mdx

@@ -23,7 +23,7 @@ slug: "/release-notes"
 
 - Refined step name generation to use alphabetical indexing.
 - Improved OpenOps Tables lookups to use explicit server/project context and database token authentication for consistent, correctly scoped table access.
-- Added `npm audit` security checks to the CI pipeline to catch vulnerable dependencies automatically.
+- Strengthened dependency security by adding automated `npm audit` checks.
 - Deferred encryption key loading to improve startup performance.
 - Updated third-party license documentation to include the core linux x64 gnu package.