MGMT-24456: upgrade to golang 1.26 (#1017)

Author: shay23bra

.ci-operator.yaml

@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-9-release-golang-1.25-openshift-4.22
+  tag: rhel-9-release-golang-1.26-openshift-5.0

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM registry.access.redhat.com/ubi9/go-toolset:1.25 AS builder
+FROM registry.access.redhat.com/ubi9/go-toolset:1.26 AS builder
 
 USER 0
 

Dockerfile.rhtap

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM brew.registry.redhat.io/rh-osbs/openshift-golang-builder:rhel_9_1.25 as builder
+FROM brew.registry.redhat.io/rh-osbs/openshift-golang-builder:rhel_9_1.26 as builder
 
 WORKDIR /workspace
 COPY . .

Makefile

@@ -163,7 +163,7 @@ mockgen: ## Download mockgen locally if necessary.
 
 GOLINT = $(shell pwd)/bin/golangci-lint
 golint: ## Download golangci-lint locally if necessary.
-	$(call go-get-tool,$(GOLINT),github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.6.2)
+	$(call go-get-tool,$(GOLINT),github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.11.4)
 
 # go-get-tool will 'go get' any package $2 and install it to $1.
 PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))

go.mod

@@ -1,6 +1,8 @@
 module github.com/openshift/cluster-api-provider-agent
 
-go 1.25.7
+go 1.26.0
+
+toolchain go1.26.2
 
 // Versions to be held for v1beta1
 // sigs.k8s.io/controller-runtime on v0.11.x