Add Roche to official ADOPTERS (#6076)

Without this, there is no way to know Roche is using, caring, and
involved in External-Secrets!

Signed-off-by: Jean-Philippe Evrard <jean-philippe.evrard+rochepub@external.roche.com>

ADOPTERS.md

@@ -30,6 +30,7 @@
 - [Polarpoint](https://www.polarpoint.io/)
 - [Radio France](https://www.radiofrance.fr/)
 - [Red Hat OpenShift](https://www.redhat.com/en/technologies/cloud-computing/openshift)
+- [Roche](https://www.roche.com/)
 - [SAP](https://www.sap.com/)
 - [Skeeled](https://www.skeeled.com/)
 - [Topicus.Education](https://topicus.nl/en/sectors/education)