Add Nox (#262)

Author: edgarrmondragon

index.md

@@ -233,6 +233,7 @@ color by default via `NO_COLOR`.
 | [nnn](https://github.com/jarun/nnn) | File manager | [2020-04-05 / 4.6](https://github.com/jarun/nnn/commit/f14fb9c0f92c25ab79dd0c47d16f075199aeb999) |
 | [noether](https://github.com/yunruse/noether) | Unit catalogue and calculator for Python | [2023-08-02 / 1.1](https://github.com/yunruse/Noether/releases/tag/v1.1) |
 | [nostt](https://github.com/sjmulder/nostt) | Teletext reader | [2023-08-03 / 1.3](https://github.com/sjmulder/nostt/releases/tag/1.3) |
+| [Nox](https://github.com/wntrblm/nox) | Flexible test automation | [2019-04-11 / 2019.4.11](https://github.com/wntrblm/nox/releases/tag/2019.4.11) |
 | [npm](https://www.npmjs.com/) | Package manager for JavaScript | [2018-03-24 / 5.8.0](https://github.com/npm/npm/releases/tag/v5.8.0) |
 | [nvh](https://github.com/JohnRGee/nvh) | Node Version Helper | [2018-08-04 / 4.1.0](https://github.com/JohnRGee/nvh/releases/tag/v4.1.0) |
 | [o](https://github.com/xyproto/o) | Small, fast, and limited text editor | [2020-01-06 / 2.13.2](https://github.com/xyproto/o/tree/2.13.2) |