Fix unused import in webhook-receiver

Author: Alexanderamiri

lambda/webhook-receiver-go/main.go

@@ -5,16 +5,15 @@ import (
 	"crypto/hmac"
 	"crypto/sha256"
 	"encoding/hex"
-	"encoding/json"
 	"fmt"
 	"os"
 
 	"github.com/aws/aws-lambda-go/events"
 	"github.com/aws/aws-lambda-go/lambda"
+	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/config"
 	"github.com/aws/aws-sdk-go-v2/service/sqs"
 	"github.com/aws/aws-sdk-go-v2/service/sqs/types"
-	"github.com/aws/aws-sdk-go-v2/aws"
 )
 
 var sqsClient *sqs.Client