fix(deps): update module sigs.k8s.io/controller-tools to v0.21.0 (#349)

* fix(deps): update module sigs.k8s.io/controller-runtime to v0.24.1

* chore(deps): bump controller-runtime v0.24.1, Kubernetes v0.36.2, Go 1.26

These runtime dependencies move together and require Go 1.26:

- controller-runtime v0.23.1 -> v0.24.1
- k8s.io/* -> v0.36.2 (client-go v0.36 needs controller-runtime v0.24's
  HasSyncedChecker; supersedes the standalone kubernetes-monorepo PR)
- go.mod go directive -> 1.26.0 (minimum required by the above)

CI/tooling updated for Go 1.26:

- .github/workflows: GO_VERSION 1.25.9 -> 1.26.4 (current latest). setup-go reads
  this env, not go.mod; the old 1.25.9 was also already behind master's go.mod
  (1.25.11), which broke the vendor step under GOTOOLCHAIN=local.
- actions/setup-go v5 -> v6 (supersedes the standalone setup-go PR).
- GOLANGCI_VERSION v2.11.2 -> v2.12.2 (v2.11.2 is built with Go 1.25 and refuses
  a Go 1.26 module; v2.12.2 is built with Go 1.26).
- .golangci.yml: exclude the SA1019 scheme.Builder deprecation from
  controller-runtime v0.24 (matches existing SA1019 exclusions); set goconst
  ignore-tests to preserve prior counting after the goconst update in
  golangci-lint v2.12.

Signed-off-by: Markus Siebert <markus.siebert@deutschebahn.com>

* fix(deps): update module sigs.k8s.io/controller-tools to v0.21.0

* chore: regenerate CRDs with controller-gen v0.21.0

Regenerated `package/crds` with controller-tools v0.21.0. The only change is the
`controller-gen.kubebuilder.io/version` annotation (v0.18.0 -> v0.21.0); no CRD
schema changes. This is what the check-diff job flagged.

controller-tools v0.21 requires Go 1.26, which this branch inherits from the
Go 1.26 bump in #348 (this PR stacks on it).

Signed-off-by: Markus Siebert <markus.siebert@deutschebahn.com>

---------

Signed-off-by: Markus Siebert <markus.siebert@deutschebahn.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Markus Siebert <markus.siebert@deutschebahn.com>

Author: renovate[bot]

package/crds/gitlab.crossplane.io_providerconfigs.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: providerconfigs.gitlab.crossplane.io
 spec:
   group: gitlab.crossplane.io

package/crds/gitlab.crossplane.io_providerconfigusages.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: providerconfigusages.gitlab.crossplane.io
 spec:
   group: gitlab.crossplane.io

package/crds/gitlab.m.crossplane.io_clusterproviderconfigs.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: clusterproviderconfigs.gitlab.m.crossplane.io
 spec:
   group: gitlab.m.crossplane.io

package/crds/gitlab.m.crossplane.io_providerconfigs.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: providerconfigs.gitlab.m.crossplane.io
 spec:
   group: gitlab.m.crossplane.io

package/crds/gitlab.m.crossplane.io_providerconfigusages.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: providerconfigusages.gitlab.m.crossplane.io
 spec:
   group: gitlab.m.crossplane.io

package/crds/groups.gitlab.crossplane.io_accesstokens.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: accesstokens.groups.gitlab.crossplane.io
 spec:
   group: groups.gitlab.crossplane.io

package/crds/groups.gitlab.crossplane.io_badges.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: badges.groups.gitlab.crossplane.io
 spec:
   group: groups.gitlab.crossplane.io

package/crds/groups.gitlab.crossplane.io_deploytokens.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: deploytokens.groups.gitlab.crossplane.io
 spec:
   group: groups.gitlab.crossplane.io

package/crds/groups.gitlab.crossplane.io_groups.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: groups.groups.gitlab.crossplane.io
 spec:
   group: groups.gitlab.crossplane.io

package/crds/groups.gitlab.crossplane.io_hooks.yaml

@@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.18.0
+    controller-gen.kubebuilder.io/version: v0.21.0
   name: hooks.groups.gitlab.crossplane.io
 spec:
   group: groups.gitlab.crossplane.io