docs: Update CONTRIBUTORS.md with the latest contributors (#562)

Update CONTRIBUTORS.md with the latest contributors

Author: pyansys-ci-bot

CONTRIBUTORS.md

@@ -6,11 +6,11 @@
 
 ## Individual Contributors
 
-* [Jan von Rickenbach](https://github.com/janvonrickenbach)
-* [René Roos](https://github.com/roosre)
 * [Dominik Gresch](https://github.com/greschd)
-* [Jorge Martínez](https://github.com/jorgepiloto)
-* [Roberto Pastor Muela](https://github.com/RobPasMue)
 * [Federico Negri](https://github.com/FedericoNegri)
+* [Jorge Martínez](https://github.com/jorgepiloto)
 * [Kathy Pippert](https://github.com/PipKat)
+* [Nellie Shum](https://github.com/nshum4)
+* [René Roos](https://github.com/roosre)
 * [Revathy Venugopal](https://github.com/Revathyvenugopal162)
+* [Roberto Pastor Muela](https://github.com/RobPasMue)