build(deps-dev): bump @types/imap-simple from 4.2.5 to 4.2.6

Bumps [@types/imap-simple](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/imap-simple) from 4.2.5 to 4.2.6.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/imap-simple)

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

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

Author: dependabot[bot]

package-lock.json

@@ -39,7 +39,7 @@
   },
   "devDependencies": {
     "@types/html-to-text": "^9.0.1",
-    "@types/imap-simple": "^4.2.5",
+    "@types/imap-simple": "^4.2.6",
     "@types/jest": "^28.1.7",
     "@types/json-stable-stringify": "^1.0.34",
     "@types/jsonwebtoken": "^9.0.2",