Update ghcr.io/nginx/nginx-gateway-fabric Docker tag to v1.6.2

| datasource | package                            | from   | to    |
| ---------- | ---------------------------------- | ------ | ----- |
| docker     | ghcr.io/nginx/nginx-gateway-fabric | v1.0.0 | 1.6.2 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

operators/config/manager/kustomization.yaml

@@ -5,4 +5,4 @@ kind: Kustomization
 images:
 - name: controller
   newName: ghcr.io/nginx/nginx-gateway-fabric
-  newTag: v1.0.0
+  newTag: 1.6.2