Add northflank to the list of adopters (cortexproject#4553)

Signed-off-by: Champ-Goblem <[email protected]>

Author: Champ-Goblem

ADOPTERS.md

@@ -12,6 +12,7 @@ This is the list of organisations that are using Cortex in **production environm
 * [GoJek](https://www.gojek.io/)
 * [GrafanaLabs](https://grafana.com/)
 * [MayaData](https://mayadata.io/)
+* [Northflank](https://northflank.com/)
 * [Opstrace](https://opstrace.com/)
 * [Platform9](https://platform9.com/)
 * [REWE Digital](https://rewe-digital.com/)

website/data/adopters.yml

@@ -30,6 +30,9 @@ adopters:
 - name: MayaData
   url: https://mayadata.io/
   logo: mayadata.svg
+- name: Northflank
+  url: https://northflank.com/
+  logo: northflank.svg
 - name: Opstrace
   url: https://opstrace.com/
   logo: opstrace.png