Add Rust Bern Meetup #1 (#4196)

Author: dspicher

draft/2023-03-29-this-week-in-rust.md

@@ -171,6 +171,8 @@ Rusty Events between 2023-03-29 - 2023-04-26 🦀
     * [**Rust Lyon Meetup #3**](https://www.meetup.com/fr-FR/rust-lyon/events/292283973/)
 * 2023-04-19 | Zurich, CH | [Rust Zurich](https://www.meetup.com/de-DE/rust-zurich/)
     * [**sett: data encryption and transfer made easy(ier)**](https://www.meetup.com/de-DE/rust-zurich/events/292151879/)
+* 2023-04-20 | Bern, CH | [Rust Bern](https://www.meetup.com/de-DE/rust-bern/)
+    * [**First Rust Bern Meetup!**](https://www.meetup.com/de-DE/rust-bern/events/292206056/)
 
 ### Asia
 * 2023-04-08 | Kyoto, JP | [Kansai Rust](https://www.meetup.com/kansai-rust/)