feat(Icons): add wechat icon, rename wechat-pay icon

packages/vant-icons/src/config.js

@@ -219,8 +219,9 @@ module.exports = {
     'delete',
     'font',
     // without corresponding outline icon
-    'alipay',
     'wechat',
+    'wechat-pay',
+    'alipay',
     'photograph',
     'youzan-shield',
     'umbrella-circle',

packages/vant-icons/src/index.less

@@ -5,9 +5,9 @@
   font-family: 'vant-icon';
   font-style: normal;
   font-display: auto;
-  src: url('https://img.yzcdn.cn/vant/vant-icon-84f687.woff2') format('woff2'),
-    url('https://img.yzcdn.cn/vant/vant-icon-84f687.woff') format('woff'),
-    url('https://img.yzcdn.cn/vant/vant-icon-84f687.ttf') format('truetype');
+  src: url('https://img.yzcdn.cn/vant/vant-icon-f463a9.woff2') format('woff2'),
+    url('https://img.yzcdn.cn/vant/vant-icon-f463a9.woff') format('woff'),
+    url('https://img.yzcdn.cn/vant/vant-icon-f463a9.ttf') format('truetype');
 }
 
 .van-icon {
@@ -967,10 +967,14 @@
   content: '\F0E1';
 }
 
-.van-icon-wechat::before {
+.van-icon-wechat-pay::before {
   content: '\F0E2';
 }
 
+.van-icon-wechat::before {
+  content: '\F0EE';
+}
+
 .van-icon-youzan-shield::before {
   content: '\F0E3';
 }