docs: Update CONTRIBUTORS.md with the latest contributors (#6144)

Author: pyansys-ci-bot

CONTRIBUTORS.md

@@ -87,6 +87,7 @@
 * [rmawatson](https://github.com/rmawatson)
 * [robertkipp](https://github.com/robertkipp)
 * [Roberto Pastor Muela](https://github.com/RobPasMue)
+* [Ronald Weber](https://github.com/Ronaldo-SIPI)
 * [Samuel Lopez](https://github.com/Samuelopez-ansys)
 * [Satyajeet Padhi](https://github.com/ansys-satyajeet)
 * [Schwalbe262](https://github.com/Schwalbe262)
@@ -104,5 +105,6 @@
 * [Vinod_GPS_Ansys](https://github.com/pvinod13)
 * [voss70](https://github.com/voss70)
 * [vossleon](https://github.com/vossleon)
+* [vpipidis](https://github.com/vpipidis)
 * [XZ](https://github.com/atlanswer)
 * [Zeba](https://github.com/zebanaqviWAT)

doc/changelog.d/6144.documentation.md

@@ -0,0 +1 @@
+Update ``CONTRIBUTORS.md`` with the latest contributors