Update dependency openstacksdk to v4.18.0

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

Pipfile

@@ -8,7 +8,7 @@ loguru = "==0.7.3"
 minio = "==7.2.20"
 munch = "==4.0.0"
 natsort = "==8.4.0"
-openstacksdk = "==4.17.0"
+openstacksdk = "==4.18.0"
 paramiko = "==5.0.0"
 patool = "==4.0.5"
 requests = "==2.34.2"