Update Postnord details in Karpenter Adopters list (#7068)

Co-authored-by: Dhaval Vithalani <dhaval.vithalani@postnord.com>

ADOPTERS.md

@@ -40,7 +40,7 @@ If you are open to others contacting you about your use of Karpenter on Slack, a
 | Omaze | Intelligently using Karpenter's autoscaling to power our platforms | `@devopsidiot` | [Homepage](https://www.omaze.com/) |
 | PITS Global Data Recovery Services | Used to manage continuous integration and continuous delivery/deployment workflows. | N/A | [PITS Global Data Recovery Services](https://www.pitsdatarecovery.net/) |
 | PlanetScale | Leveraging Karpenter to dynamically deploy serverless MySQL workloads. | `@jtcunning` | [Homepage](https://www.planetscale.com/) |
-| Postnord | Using Karpenter for Node Lifecycle Management & Autoscaling. | `@dhaval-vithalani` | [Homepage](https://www.postnord.com/) |
+| Postnord | Using Karpenter for Node Lifecycle Management & Autoscaling. | `@dhaval-vithalani`, `@christianOps`, `@sjam11`  | [Postnord](https://www.postnord.com/) |
 | QuestDB | Using Karpenter for the service nodes of the QuestBD Cloud (time-series database). | [questdb slack group](https://slack.questdb.io/) | [QuestDB](https://questdb.io/) |
 | Rapid7 | Using Karpenter across all of our Kubernetes infrastructure for efficient autoscaling, both in terms of speed and cost | `@arobinson`, `@Ross Kirk`, `@Ryan Williams` | [Homepage](https://www.rapid7.com/) |
 | Sendcloud | Using Karpenter to scale our k8s clusters for Europe’s #1 shipping automation platform  | N/A | [Homepage](https://www.sendcloud.com/) |