bump golang version to 1.18 and ko to 0.10.0

Author: sharifelgamal

Makefile

@@ -8,7 +8,7 @@ build: ## Build the gcp-auth-webhook binary
 .PHONY: image
 image: ## Create and push multiarch manifest and images
 	@read -p "This will build and push $(REGISTRY)/gcp-auth-webhook:$(VERSION). Do you want to proceed? (Y/N): " confirm && echo $$confirm | grep -iq "^[yY]" || exit 1;
-	curl -L https://github.com/google/ko/releases/download/v0.8.3/ko_0.8.3_$(GOOS)_x86_64.tar.gz | tar xzf - ko && chmod +x ./ko
+	curl -L https://github.com/google/ko/releases/download/v0.10.0/ko_0.10.0_$(GOOS)_x86_64.tar.gz | tar xzf - ko && chmod +x ./ko
 	KO_DOCKER_REPO=$(REGISTRY) ./ko publish -B . --platform all -t $(VERSION)
 	rm ./ko
 

go.mod

@@ -1,8 +1,24 @@
 module github.com/GoogleContainerTools/gcp-auth-webhook
 
-go 1.14
+go 1.18
 
 require (
 	k8s.io/api v0.20.4
 	k8s.io/apimachinery v0.20.4
 )
+
+require (
+	github.com/go-logr/logr v0.2.0 // indirect
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/google/gofuzz v1.1.0 // indirect
+	github.com/json-iterator/go v1.1.10 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b // indirect
+	golang.org/x/text v0.3.4 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.2.8 // indirect
+	k8s.io/klog/v2 v2.4.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.0.2 // indirect
+	sigs.k8s.io/yaml v1.2.0 // indirect
+)

go.sum

@@ -143,7 +143,6 @@ golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=