Upgrade go version to 1.18 (#5045)

* Upgrade go version to 1.18

* fix go 1.18 compatibility

* update gofmt

* ignore golangci-lint staticcheck

* update gofmt

pkg/models/monitoring/monitoring.go

@@ -538,6 +538,7 @@ func (mo monitoringOperator) GetAppWorkloads(ns string, apps []string) map[strin
 	for _, appObj := range applicationList {
 		if appFilter(appObj) {
 			for _, com := range appObj.Status.ComponentList.Objects {
+				//nolint:staticcheck // TODO Use golang.org/x/text/cases instead.
 				kind := strings.Title(com.Kind)
 				name := com.Name
 				componentsMap[getAppFullName((appObj))] = append(componentsMap[getAppFullName(appObj)], kind+":"+name)

pkg/models/tenant/metering.go

@@ -942,6 +942,7 @@ func (t *tenantOperator) isAppComponent(ns, kind, componentName string) (bool, s
 
 	for appName, cList := range appWorkloads {
 		for _, component := range cList {
+			//nolint:staticcheck // TODO Use golang.org/x/text/cases instead.
 			if component == fmt.Sprintf("%s:%s", strings.Title(kind), componentName) {
 				return true, appName
 			}