chore(deps): update istio/istioctl docker tag to v1.25.2

Author: renovate[bot]

.github/test_dependencies.yaml

@@ -18,7 +18,7 @@ e2e:
     - # renovate: datasource=docker depName=kindest/node versioning=docker
       kind: 'v1.32.3'
       # renovate: datasource=docker depName=istio/istioctl versioning=docker
-      istio: '1.25.0'
+      istio: '1.25.2'
     - # renovate: datasource=docker depName=kindest/node@only-patch versioning=docker
       kind: 'v1.30.8'
       # renovate: datasource=docker depName=istio/istioctl@only-patch versioning=docker