chore(build): upgrade controller-tools to v0.19.0 for Go 1.25 compatibility

Upgrades controller-tools from v0.16.1 to v0.19.0 to fix CI build failures
with Go 1.25. The older version depended on golang.org/x/tools v0.24.0 which
is incompatible with Go 1.25 and caused compilation errors:
  invalid array length -delta * delta (constant -256 of type int64)

The new version uses golang.org/x/tools v0.36.0 which is fully compatible
with Go 1.25.

Related issue: golang/go#74462

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: chengfang

Makefile

@@ -218,7 +218,7 @@ GOLANGCI_LINT = $(LOCALBIN)/golangci-lint
 
 ## Tool Versions
 KUSTOMIZE_VERSION ?= v5.4.3
-CONTROLLER_TOOLS_VERSION ?= v0.16.1
+CONTROLLER_TOOLS_VERSION ?= v0.19.0
 ENVTEST_VERSION ?= release-0.19
 GOLANGCI_LINT_VERSION ?= v2.5.0
 

config/crd/bases/argocd-image-updater.argoproj.io_imageupdaters.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.16.1
+    controller-gen.kubebuilder.io/version: v0.19.0
   name: imageupdaters.argocd-image-updater.argoproj.io
 spec:
   group: argocd-image-updater.argoproj.io