chore(deps-dev): bump mailpit-api from 1.7.2 to 1.8.1

Bumps [mailpit-api](https://github.com/mpspahr/mailpit-api) from 1.7.2 to 1.8.1.
- [Release notes](https://github.com/mpspahr/mailpit-api/releases)
- [Commits](mpspahr/mailpit-api@v1.7.2...v1.8.1)

---
updated-dependencies:
- dependency-name: mailpit-api
  dependency-version: 1.8.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -91,7 +91,7 @@
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.8.1",
     "happy-dom": "^20.8.9",
-    "mailpit-api": "^1.7.2",
+    "mailpit-api": "^1.8.1",
     "openapi-typescript": "^7.13.0",
     "typescript": "^5.9.3",
     "vite": "^7.1.10",