change otel dep version to make the build pass

Signed-off-by: spacewander <[email protected]>

patch/istio/1.21/20240410-htnn-go-mod.patch

@@ -2,7 +2,7 @@ diff --git a/go.mod b/go.mod
 index e7f308e890..def9507093 100644
 --- a/go.mod
 +++ b/go.mod
-@@ -5,6 +5,29 @@ go 1.21
+@@ -5,6 +5,32 @@ go 1.21
  // Client-go does not handle different versions of mergo due to some breaking changes - use the matching version
  replace github.com/imdario/mergo => github.com/imdario/mergo v0.3.5
 
@@ -28,6 +28,8 @@ index e7f308e890..def9507093 100644
 +// added in v0.18.0 causes `go test istio.io/istio/pkg/config/crd` to fail because of compilation error.
 +// We can't update the test to solve the error because it's indirect depended by k8s/apiserver.
 +replace github.com/google/cel-go => github.com/google/cel-go v0.17.8
++// HTNN requires a higher version of opentelemetry package
++replace go.opentelemetry.io/otel/sdk/metric => go.opentelemetry.io/otel/sdk/metric v1.28.0
 +
  require (
  	cloud.google.com/go/compute/metadata v0.2.3