更新mailer依赖组件，修复QQ邮箱兼容问题

composer.json

@@ -22,14 +22,14 @@
         "topthink/think-queue": "1.1.6",
         "topthink/think-helper": "^1.0.7",
         "fastadminnet/fastadmin-addons": "~1.4.0",
+        "fastadminnet/fastadmin-mailer": "^2.0.0",
         "overtrue/pinyin": "^3.0",
         "phpoffice/phpspreadsheet": "^1.29.1",
         "overtrue/wechat": "^4.6",
         "ext-json": "*",
         "ext-curl": "*",
         "ext-pdo": "*",
-        "ext-bcmath": "*",
-        "txthinking/mailer": "^2.0"
+        "ext-bcmath": "*"
     },
     "config": {
         "preferred-install": "dist",