Updated BINDINGS.md for Ruby (#4639)

Added a Ruby binding known as raylib-ruby on 4.5. (https://github.com/wilsonsilva/raylib-ruby)

BINDINGS.md

@@ -69,6 +69,7 @@ Some people ported raylib to other languages in the form of bindings or wrappers
 | [raylibr](https://github.com/jeroenjanssens/raylibr)                                     | 4.0              | [R](https://www.r-project.org)                                       | MIT                  |
 | [raylib-ffi](https://github.com/ewpratten/raylib-ffi)                                    | 5.5              | [Rust](https://www.rust-lang.org)                                    | GPLv3                |
 | [raylib-rs](https://github.com/raylib-rs/raylib-rs)                                      | **5.5**          | [Rust](https://www.rust-lang.org)                                    | Zlib                 |
+| [raylib-ruby](https://github.com/wilsonsilva/raylib-ruby)                                | 4.5              | [Ruby](https://www.ruby-lang.org)                                    | Zlib                 |
 | [Relib](https://github.com/RedCubeDev-ByteSpace/Relib)                                   | 3.5              | [ReCT](https://github.com/RedCubeDev-ByteSpace/ReCT)                 | **???**              |
 | [racket-raylib](https://github.com/eutro/racket-raylib)                                  | 4.0              | [Racket](https://racket-lang.org)                                    | MIT/Apache-2.0       |
 | [raylib-swift](https://github.com/STREGAsGate/Raylib)                                    | 4.0              | [Swift](https://swift.org)                                           | MIT                  |