Bump ldapjs from 2.2.3 to 2.2.4

Bumps [ldapjs](https://github.com/ldapjs/node-ldapjs) from 2.2.3 to 2.2.4.
- [Release notes](https://github.com/ldapjs/node-ldapjs/releases)
- [Changelog](https://github.com/ldapjs/node-ldapjs/blob/master/CHANGES.md)
- [Commits](ldapjs/node-ldapjs@v2.2.3...v2.2.4)

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

package.json

@@ -51,7 +51,7 @@
     "jshint": "2.12.0",
     "mocha": "8.3.2",
     "morgan": "1.10.0",
-    "ldapjs": "2.2.3"
+    "ldapjs": "2.2.4"
   },
   "scripts": {
     "audit": "npm audit | grep -oE 'https?\\:\\/\\/(www\\.)?(nodesecurity\\.io|npmjs\\.com)\\/advisories\\/[[:digit:]]+' | rev | cut -d '/' -f 1 | rev | diff known-vulns.txt -",