chore(deps-dev): bump @types/mailparser from 3.4.3 to 3.4.4

Bumps [@types/mailparser](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mailparser) from 3.4.3 to 3.4.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mailparser)

---
updated-dependencies:
- dependency-name: "@types/mailparser"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -168,7 +168,7 @@
     "@types/koa-static": "4.0.3",
     "@types/koa__router": "12.0.3",
     "@types/lint-staged": "13.2.1",
-    "@types/mailparser": "3.4.3",
+    "@types/mailparser": "3.4.4",
     "@types/markdown-it": "13.0.5",
     "@types/module-alias": "2.0.3",
     "@types/nodemon": "1.19.4",