Configure http/2 server and update go dependencies

go.mod

@@ -18,6 +18,7 @@ require (
 	github.com/naoina/go-stringutil v0.1.0 // indirect
 	github.com/naoina/toml v0.1.1
 	github.com/prometheus/client_golang v1.9.0
+	github.com/rs/cors v1.7.0 // indirect
 	github.com/smallstep/certificates v0.15.4
 	github.com/smallstep/cli v0.15.2
 	github.com/smallstep/nosql v0.3.0 // cannot upgrade from v0.3.0 until protobuf warning is fixed
@@ -26,8 +27,8 @@ require (
 	github.com/yuin/goldmark-highlighting v0.0.0-20200307114337-60d527fdb691
 	go.uber.org/zap v1.16.0
 	golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de
-	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b
-	golang.org/x/term v0.0.0-20210317153231-de623e64d2a6
+	golang.org/x/net v0.0.0-20210510120150-4163338589ed
+	golang.org/x/term v0.0.0-20210503060354-a79de5458b56
 	google.golang.org/genproto v0.0.0-20200806141610-86f49bd18e98
 	google.golang.org/protobuf v1.24.0 // cannot upgrade until warning is fixed
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0