feat(helm-chart)!: Update Helm release authentik to 2026.2.1

| datasource | package   | from      | to       |
| ---------- | --------- | --------- | -------- |
| helm       | authentik | 2025.12.4 | 2026.2.1 |

Author: angelnu-bot[bot]

apps/authentik/app/helmrelease.yaml

@@ -6,7 +6,7 @@ spec:
   chart:
     spec:
       chart: authentik
-      version: "2025.12.4"
+      version: "2026.2.1"
       sourceRef:
         kind: HelmRepository
         name: authentik