Update release notes for 5.6.0

Author: selvamt94

versioned_docs/version-5.6/14.releasenotes/01.5x/01.5x.md

@@ -41,6 +41,8 @@ Older scanner pods cache the controller's initial capability response. They will
 - **fix**: Allow explicit network rules in restrictive group mode.
 - **fix(lint)**: Resolve `errcheck` findings.
 - **fix(code-scanning)**: Resolve code scanning findings.
+- **issue-2519**: silent error handling in consul kv slot reads in network functions
+- **issue-2485**: scanner cvedb upgrade takes huge memory utilization
 
 #### 5.5.3 June 2026