Use any instead of interface{} (#20577)

* replace interface{} with any

app/webhub_fuzz.go

@@ -101,7 +101,7 @@ type actionData struct {
 	selectTeamID         string
 	invalidateConnUserID string
 	updateConnUserID     string
-	attachment           map[string]interface{}
+	attachment           map[string]any
 }
 
 func getActionData(data []byte, userIDs, teamIDs, channelIDs []string) *actionData {
@@ -131,7 +131,7 @@ func getActionData(data []byte, userIDs, teamIDs, channelIDs []string) *actionDa
 	input.updateConnUserID = userIDs[int(data[4])%len(userIDs)]
 	input.event = events[int(data[5])%len(events)]
 	data = data[6:]
-	input.attachment = make(map[string]interface{})
+	input.attachment = make(map[string]any)
 	for len(data) >= 4 { // 2 bytes key, 2 bytes value
 		k := data[:2]
 		v := data[2:4]