fix(nextcloud): Add missing kubernetes manifest to kustomization

apps/k8s01/nextcloud/kustomization.yaml

@@ -8,6 +8,7 @@ resources:
   - pdb.yaml
   - slo.yaml
   - ../../../shared/applications/oauth2-proxy.yaml
+  - oauth2.yaml
   - ../../../shared/resourcequotas/default.yaml
 patchesStrategicMerge:
   - database-override.yaml