chore(portainer): clean up the code EE-5188 (#8660)

api/database/boltdb/json_test.go

@@ -129,7 +129,7 @@ func Test_UnMarshalObjectUnencrypted(t *testing.T) {
 			var object string
 			err := conn.UnmarshalObject(test.object, &object)
 			is.NoError(err)
-			is.Equal(test.expected, string(object))
+			is.Equal(test.expected, object)
 		})
 	}
 }

api/database/boltdb/tx.go

@@ -92,7 +92,7 @@ func (tx *DbTransaction) CreateObject(bucketName string, fn func(uint64) (int, i
 		return err
 	}
 
-	return bucket.Put(tx.conn.ConvertToKey(int(id)), data)
+	return bucket.Put(tx.conn.ConvertToKey(id), data)
 }
 
 func (tx *DbTransaction) CreateObjectWithId(bucketName string, id int, obj interface{}) error {