build(deps): bump mailparser from 3.7.2 to 3.7.3

Bumps [mailparser](https://github.com/nodemailer/mailparser) from 3.7.2 to 3.7.3.
- [Release notes](https://github.com/nodemailer/mailparser/releases)
- [Changelog](https://github.com/nodemailer/mailparser/blob/master/CHANGELOG.md)
- [Commits](nodemailer/mailparser@v3.7.2...v3.7.3)

---
updated-dependencies:
- dependency-name: mailparser
  dependency-version: 3.7.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -82,7 +82,7 @@
     "html-to-text": "^9.0.5",
     "json-stable-stringify": "^1.3.0",
     "jsonwebtoken": "^9.0.2",
-    "mailparser": "^3.7.2",
+    "mailparser": "^3.7.3",
     "marked": "^15.0.12",
     "nodemailer": "^7.0.3",
     "rfc2047": "^4.0.1"