Revert "update OpenTelemetry dependencies"

This reverts commit 82e9ce79c7.

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/marshal_json.go

@@ -24,11 +24,6 @@ func (j *JSONBuiltin) Marshal(v interface{}) ([]byte, error) {
 	return json.Marshal(v)
 }
 
-// MarshalIndent is like Marshal but applies Indent to format the output
-func (j *JSONBuiltin) MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
-	return json.MarshalIndent(v, prefix, indent)
-}
-
 // Unmarshal unmarshals JSON data into "v".
 func (j *JSONBuiltin) Unmarshal(data []byte, v interface{}) error {
 	return json.Unmarshal(data, v)