chore(deps): bump istio.io/client-go from 1.28.2 to 1.28.3

Bumps [istio.io/client-go](https://github.com/istio/client-go) from 1.28.2 to 1.28.3.
- [Commits](istio/client-go@1.28.2...1.28.3)

---
updated-dependencies:
- dependency-name: istio.io/client-go
  dependency-version: 1.28.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

go.mod

@@ -20,7 +20,7 @@ require (
 	golang.org/x/exp v0.0.0-20251113190631-e25ba8c21ef6
 	google.golang.org/protobuf v1.36.11
 	istio.io/api v1.28.2
-	istio.io/client-go v1.28.2
+	istio.io/client-go v1.28.3
 	k8s.io/apimachinery v0.35.0
 	k8s.io/client-go v0.34.3
 )

go.sum

@@ -271,8 +271,8 @@ howett.net/plist v1.0.1 h1:37GdZ8tP09Q35o9ych3ehygcsL+HqKSwzctveSlarvM=
 howett.net/plist v1.0.1/go.mod h1:lqaXoTrLY4hg8tnEzNru53gicrbv7rrk+2xJA/7hw9g=
 istio.io/api v1.28.2 h1:1DWf3M4+glutseG0WqwDuAqE99l+ce8zyqseBX5vK7k=
 istio.io/api v1.28.2/go.mod h1:BD3qv/ekm16kvSgvSpuiDawgKhEwG97wx849CednJSg=
-istio.io/client-go v1.28.2 h1:Nip37oU/gFoqoWIRNDoEbpFZETnL4GujMDtQYJf+U9g=
-istio.io/client-go v1.28.2/go.mod h1:bFfn5BZ4EHeLLOVbXIfjuckSC31uADdGhbmB69QwECg=
+istio.io/client-go v1.28.3 h1:4SV2PU4dJGTpQcPa8pE0f7yzz9cXZlsp721PyZKR0VE=
+istio.io/client-go v1.28.3/go.mod h1:bFfn5BZ4EHeLLOVbXIfjuckSC31uADdGhbmB69QwECg=
 k8s.io/api v0.34.3 h1:D12sTP257/jSH2vHV2EDYrb16bS7ULlHpdNdNhEw2S4=
 k8s.io/api v0.34.3/go.mod h1:PyVQBF886Q5RSQZOim7DybQjAbVs8g7gwJNhGtY5MBk=
 k8s.io/apimachinery v0.35.0 h1:Z2L3IHvPVv/MJ7xRxHEtk6GoJElaAqDCCU0S6ncYok8=