chore(deps): update istio/istioctl docker tag to v1.23.2 (#6524)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/test_dependencies.yaml

@@ -20,7 +20,7 @@ e2e:
     - # renovate: datasource=docker depName=kindest/node versioning=docker
       kind: 'v1.31.0'
       # renovate: datasource=docker depName=istio/istioctl versioning=docker
-      istio: '1.23.1'
+      istio: '1.23.2'
     - # renovate: datasource=docker depName=kindest/node@only-patch versioning=docker
       kind: 'v1.30.3'
       # renovate: datasource=docker depName=istio/istioctl@only-patch versioning=docker