chore: update ADOPTERS.md from global .github repo (#272)

Signed-off-by: microcks-bot <[email protected]>

Author: microcks-bot

ADOPTERS.md

@@ -53,3 +53,4 @@ This document also lists the organizations using Microcks based on public inform
 | [Amadeus](https://amadeus.com) | [Romain Quinio](https://www.linkedin.com/in/rquinio) [Kevin Viet](https://www.linkedin.com/in/vietk) [Basappa Vittalappa Dapalapur](https://www.linkedin.com/in/basu-dapalapur/) | `End-User` | We use Microcks to shift-left our mocking and contract-testing approach. For example, see how we use Microcks for mocking [OIDC](https://hub.microcks.io/package/openid.net/api/oidc.1.0) by checking out the slide deck from one of our talks on the subject! 👉 [Riviera DEV 2025](https://www.slideshare.net/slideshow/how-to-secure-your-apis-without-compromising-the-developer-experience-pdf/281499574).|
 | [Kiabi](https://kiabi.com) | [Emmanuel Peru](https://github.com/emmanuelperu) [Baptiste Desmasures](https://www.linkedin.com/in/baptiste-desmasures) | `end user` | We use **Microcks** to mock REST and Graphql API contracts, enable reliable testing, and streamline development workflows. It helps some of our teams ensure consistency, validate integrations early, and improve collaboration across different services. By simulating APIs, Microcks reduces friction in development and increases confidence in production deployments.|
 | [Waymark Health](https://waymarkhealth.au) | [Steve Swinsburg](https://www.linkedin.com/in/steveswinsburg) | `end user` `Consultancy` | We use **Microcks** as a shared mock server to deliver consistent, reusable REST  responses and high-quality FHIR mock data across all integration developments, reducing reliance on live systems while enabling predictable development and testing.|
+| [GSMA](https://www.gsma.com) | [Mark Cornall](https://www.linkedin.com/in/mark-cornall-85431b5/) <br> [Toyeeb Rehman](https://www.linkedin.com/in/toyeeb-rehman-52225546/)| `end user` | We use Microcks in our sandbox environment to allow external developers to experiment with [CAMARA APIs](https://github.com/camaraproject) via [Open Gateway](https://www.gsma.com/solutions-and-impact/gsma-open-gateway/) ahead of commercial integration with operators and channel partners. This approach enables the simulation of realistic network responses without relying on an underlying mobile network.|