Add dynamic Helm 3.10 CI image for GitLab chart

.gitlab/ci/custom.images.yml

@@ -1,9 +1,6 @@
 danger:
   extends: .build_static_image
 
-gitlab-charts-build-base-helm-3.9:
-  extends: .build_static_image
-
 gitlab-helm3.9-kubectl1.23:
   extends: .build_static_image
 

.gitlab/ci/gitlab.helm.images.yml

@@ -0,0 +1,28 @@
+# Used by GitLab chart CI (https://gitlab.com/gitlab-org/charts/gitlab)
+
+.gitlab-chart:
+  extends:
+    - .build_dynamic_image
+  rules:
+    - !reference [.build_dynamic_image, rules]
+    - changes:
+        - "scripts/lib/custom-docker-build"
+        - "scripts/install-kubectl"
+        - "scripts/install-helm"
+        - "scripts/install-helm-kubeconform"
+        - "scripts/install-ruby"
+        - "scripts/install-vcluster"
+        - ".gitlab/ci/gitlab.helm.images.yml"
+
+gitlab-chart:
+  extends:
+    - .gitlab-chart
+  stage: gitlab-chart
+  variables:
+    RUBY: '3.2'
+    HELM: '3.10'
+    HELM_KUBECONFORM: '0.1.17'
+    VCLUSTER: '0.19'
+    KUBECTL: '1.30'
+    AWSCLI: '1.32.93'
+    OS: 'debian:bookworm-slim'