Bump python-ldap from 3.2.0 to 3.4.0 in /spug_api

Bumps [python-ldap](https://github.com/python-ldap/python-ldap) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/python-ldap/python-ldap/releases)
- [Commits](https://github.com/python-ldap/python-ldap/compare/python-ldap-3.2.0...python-ldap-3.4.0)

---
updated-dependencies:
- dependency-name: python-ldap
  dependency-type: direct:production
...

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

spug_api/requirements.txt

@@ -6,5 +6,5 @@ paramiko==2.8.0
 django-redis==4.10.0
 requests==2.22.0
 GitPython==3.0.8
-python-ldap==3.2.0
+python-ldap==3.4.0
 openpyxl==3.0.3