[PLAT-14670] Upgrade postgres version

Summary: Upgrade postgres version

Test Plan: iTest pipeline

Reviewers: sanketh, amalyshev, anijhawan

Reviewed By: amalyshev

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D36809

managed/yba-installer/cmd/init.go

@@ -96,7 +96,7 @@ func initServices() {
 	services = make(map[string]common.Component)
 	installPostgres := viper.GetBool("postgres.install.enabled")
 	installYbdb := viper.GetBool("ybdb.install.enabled")
-	services[PostgresServiceName] = NewPostgres("14.11")
+	services[PostgresServiceName] = NewPostgres("14.12")
 	// services[YbdbServiceName] = NewYbdb("2.17.2.0")
 	services[PrometheusServiceName] = NewPrometheus("2.53.1")
 	services[YbPlatformServiceName] = NewPlatform(ybactl.Version)