change drop-and-create to update database

src/main/java/com/covas/Resources/TokenRessource.java

@@ -54,6 +54,7 @@ public class TokenRessource {
                 name = new String(Base64.decode(user), StandardCharsets.UTF_8);
             }
         } else {
+            
             String[] hash = new String(Base64.decode(auth.split(" ")[1]), StandardCharsets.UTF_8).split(":");
             name = hash[0];
             password = Hash.encryptSHA512(hash[1]);