Update to Go 1.22

Bump the Go versions in various
files and run go mod tidy to clean
up things, Then update to
controller-tools 0.15 to fix
the segmentation fault when running
controller-gen.

Author: pjonsson

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.21 AS builder
+FROM golang:1.22 AS builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests and all third-party libraries that are unlikely to change frequently

cloudbuild.yaml

@@ -15,7 +15,7 @@ steps:
     echo Checking out $_HNC_IMG_TAG
     git checkout $_HNC_IMG_TAG
 # Build the manifests and the kubectl plugin
-- name: golang:1.21
+- name: golang:1.22
   entrypoint: 'bash'
   args:
   - '-c'

go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/hierarchical-namespaces
 
-go 1.21
+go 1.22
 
 require (
 	contrib.go.opencensus.io/exporter/prometheus v0.4.0