Add yvonnefroehlich to AUTHORS.md (#1958)

Author: yvonnefroehlich

AUTHORS.md

@@ -22,3 +22,4 @@ The following people have contributed code and/or documentation to the project
 * [Wei Ji Leong](https://github.com/weiji14) | [0000-0003-2354-1988](https://orcid.org/0000-0003-2354-1988) | The Ohio State University, USA
 * [William Schlitzer](https://github.com/willschlitzer) | [0000-0002-5843-2282](https://orcid.org/0000-0002-5843-2282) | Unaffiliated
 * [Yohai Magen](https://github.com/yohaimagen) | [0000-0002-4892-4013](https://orcid.org/0000-0002-4892-4013) | Tel Aviv University, Israel
+* [Yvonne Fröhlich](https://github.com/yvonnefroehlich) | [0000-0002-8566-0619](https://orcid.org/0000-0002-8566-0619) | Karlsruhe Institute of Technology, Germany