chore: bump libmime from 5.1.0 to 5.2.0

Author: aqaurius6666

package.json

@@ -20,7 +20,7 @@
  "he": "1.2.0",
  "html-to-text": "8.2.0",
  "iconv-lite": "0.6.3",
- "libmime": "5.1.0",
+ "libmime": "5.2.0",
  "linkify-it": "4.0.0",
  "mailsplit": "5.3.2",
  "nodemailer": "6.7.3",