Fix error in package upgrade

debian/postinst

@@ -9,7 +9,7 @@ configure)
       --disabled-password --disabled-login \
       --quiet --ingroup gitlab-deps gitlab-deps
 
-    mkdir /var/lib/gitlab-deps
+    mkdir -p /var/lib/gitlab-deps
     chown gitlab-deps:gitlab-deps /var/lib/gitlab-deps
     chmod 0700 /var/lib/gitlab-deps
     ;;