fix: correct Item interface

Signed-off-by: Valery Piashchynski <[email protected]>

Author: rustatian

plugins/v1/kv/interface.go

@@ -10,7 +10,7 @@ package kv
 // Item represents a single KV entry
 type Item interface {
 	Key() string
-	Value() string
+	Value() []byte
 	Timeout() string
 }