gitlab: Update chart to 10.5.1.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Change-Id: I7c3aec53460db4e5132096e440ef579c95b35742
diff --git a/gitlab-system/gitlab.yaml b/gitlab-system/gitlab.yaml
index f396720..ea0e8f3 100644
--- a/gitlab-system/gitlab.yaml
+++ b/gitlab-system/gitlab.yaml
@@ -5,7 +5,7 @@
   namespace: gitlab-system
 spec:
   chart:
-    version: "10.4.3"
+    version: "10.5.1"
     values:
       global:
         appConfig: