upgrade vulnerable deps

upgrade gin and switch dgrijalva/jwt-go to golang-jwt/jwt.

views.go

@@ -8,8 +8,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/dgrijalva/jwt-go"
 	"github.com/gin-gonic/gin"
+	"github.com/golang-jwt/jwt"
 )
 
 var css = []string{"bundle.css", "remixicon.css"}