Istio Controlplane: Update OSCAL

Package Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/blob/1.13.4-bb.4/CHANGELOG.md

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/merge_requests/112

chart/values.yaml

@@ -128,7 +128,7 @@ istio:
   git:
     repo: https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane.git
     path: "./chart"
-    tag: "1.13.4-bb.3"
+    tag: "1.13.4-bb.4"
 
   # -- Tetrate Istio Distribution - Tetrate provides FIPs verified Istio and Envoy software and support,
   # validated through the FIPs Boring Crypto module. Find out more from Tetrate - https://www.tetrate.io/tetrate-istio-subscription