docs: Adding Kaltura to the list of adopters (#7501)

ADOPTERS.md

@@ -33,6 +33,7 @@ If you are open to others contacting you about your use of Karpenter on Slack, a
 | H2O.ai | Dynamically scaling CPU and GPU nodes for AI workloads  | `@Ophir Zahavi`, `@Asaf Oren` | [H2O.ai](https://h2o.ai/) |
 | Homa | Using Karpenter to manage dynamically big instances and save cost effectively with disruptions | `@afreyermuth98`, `@alexbescond` | [Homa](https://www.homagames.com/) |
 | idealo | Scaling multi-arch IPv6 clusters hosting web and event-driven applications | `@Heiko Rothe` | [Homepage](https://www.idealo.de) |
+| Kaltura | Using karpenter to deliver video to millions of end users | `@Ido Ziv` | [Homepage](https://corp.kaltura.com/) |
 | Livspace | Replacement for cluster autoscaler on production and staging EKS clusters | `@praveen-livspace` | [Homepage](https://www.livspace.com) |
 | Nexxiot | Easier, Safer, Cleaner Global Transportation - Using Karpenter to manage EKS nodes | `@Alex Berger` | [Homepage](https://nexxiot.com/) |
 | Nirvana Money | Building healthy, happy financial lives - Using Karpenter to manage all-Spot clusters | `@DWSR` | [Homepage](https://www.nirvana.money/) |