Update BINDINGS.md (#2100)

https://github.com/TSnake41/raylib-lua/releases/tag/v4.0a

Author: TSnake41

BINDINGS.md

@@ -13,7 +13,7 @@ Some people ported raylib to other languages in form of bindings or wrappers to
 | dray               | 3.5 | [D](https://dlang.org/)               | https://github.com/xdrie/dray       |
 | raylib-go          | 4.0-dev | [Go](https://golang.org/)             | https://github.com/gen2brain/raylib-go  |
 | raylib-rs          | 3.5 | [Rust](https://www.rust-lang.org/)    | https://github.com/deltaphc/raylib-rs     |
-| raylib-lua         | 3.7 | [Lua](http://www.lua.org/)            | https://github.com/TSnake41/raylib-lua       |
+| raylib-lua         | 4.0 | [Lua](http://www.lua.org/)            | https://github.com/TSnake41/raylib-lua       |
 | raylua             | 3.7 | [Lua](http://www.lua.org/)            | https://github.com/Rabios/raylua          |
 | nelua-raylib       | 3.7 | [nelua](https://nelua.io/)            | https://github.com/AKDev21/nelua-raylib |
 | NimraylibNow!      | 3.7 | [Nim](https://nim-lang.org/)          | https://github.com/greenfork/nimraylib_now        |