fix: correct lint issues

Author: 1995parham

.golangci.yml

@@ -10,3 +10,4 @@ linters:
     - tagliatelle
     - depguard
     - revive
+    - ireturn

internal/http/handler/home.go

@@ -81,7 +81,10 @@ func (h Home) New(c echo.Context) error {
 
 			return echo.NewHTTPError(http.StatusBadRequest, err.Error())
 		}
-		defer fd.Close()
+
+		defer func() {
+			_ = fd.Close()
+		}()
 
 		data, err := io.ReadAll(fd)
 		if err != nil {

internal/http/opa/opa.go

@@ -16,8 +16,7 @@ type OPA struct {
 }
 
 func New() (OPA, error) {
-	eng, err := sdk.New(context.Background(), sdk.Options{
-
+	eng, err := sdk.New(context.Background(), sdk.Options{ // nolint: exhaustruct
 	})
 	if err != nil {
 		return OPA{