chore: adjust imports order

Signed-off-by: xuwu <ixw1991@126.com>

Author: imxw

internal/pkg/configloader/toolconfig.go

@@ -4,11 +4,10 @@ import (
 	"fmt"
 	"io/ioutil"
 
-	"github.com/devstream-io/devstream/pkg/util/validator"
-
 	"gopkg.in/yaml.v3"
 
 	"github.com/devstream-io/devstream/pkg/util/log"
+	"github.com/devstream-io/devstream/pkg/util/validator"
 )
 
 // Tool is the struct for one section of the DevStream tool file (part of the config.)