Fix missing require statements for Ruby standard libraries

Author: kai-matsudate

lib/cloudinary/base_api.rb

@@ -1,5 +1,7 @@
+require "base64"
 require "faraday"
 require "json"
+require "time"
 
 module Cloudinary::BaseApi
   @adapter = nil

lib/cloudinary/search.rb

@@ -1,3 +1,6 @@
+require "base64"
+require "json"
+
 class Cloudinary::Search
   ENDPOINT = 'resources'
 

lib/cloudinary/utils.rb

@@ -1,6 +1,7 @@
 # Copyright Cloudinary
 
 # frozen_string_literal: true
+require 'base64'
 require 'digest/sha1'
 require 'zlib'
 require 'uri'