Bump OBS websocket protocol to 5.5.6 (#197)

Co-authored-by: cathy-cloud[bot] <154095190+cathy-cloud[bot]@users.noreply.github.com>

Author: cathy-cloud[bot]

README.md

@@ -5,8 +5,8 @@
 [![Build Status][build-img]][build-url]
 [![Go Report][goreport-img]][goreport-url]
 
-[protocol-img]: https://img.shields.io/badge/obs--websocket-v5.5.5-blue?logo=obs-studio&style=flat-square
-[protocol-url]: https://github.com/obsproject/obs-websocket/blob/5.5.5/docs/generated/protocol.md
+[protocol-img]: https://img.shields.io/badge/obs--websocket-v5.5.6-blue?logo=obs-studio&style=flat-square
+[protocol-url]: https://github.com/obsproject/obs-websocket/blob/5.5.6/docs/generated/protocol.md
 [doc-img]: https://img.shields.io/badge/pkg.go.dev-reference-blue?logo=go&logoColor=white&style=flat-square
 [doc-url]: https://pkg.go.dev/github.com/andreykaipov/goobs
 [build-img]: https://img.shields.io/github/actions/workflow/status/andreykaipov/goobs/ci.yml?logo=github&style=flat-square&branch=main
@@ -68,7 +68,7 @@ The corresponding output:
 ❯ go run _examples/basic/main.go
 OBS Studio version: 31.0.1
 Server protocol version: 5.5.4
-Client protocol version: 5.5.5
-Client library version: 1.5.4
+Client protocol version: 5.5.6
+Client library version: 1.5.6
 ```
 [//]: # (snippet-2-end)

version.go

@@ -7,7 +7,7 @@ import (
 
 const lib = "github.com/andreykaipov/goobs"
 
-var ProtocolVersion = "5.5.5"
+var ProtocolVersion = "5.5.6"
 
 var LibraryVersion = func() string {
 	bi, ok := debug.ReadBuildInfo()