build(deps): bump nginx/nginx-prometheus-exporter in /kubernetes/nginx

Bumps nginx/nginx-prometheus-exporter from 0.11.0 to 1.4.0.

---
updated-dependencies:
- dependency-name: nginx/nginx-prometheus-exporter
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

kubernetes/nginx/nginx-deployment.yaml

@@ -30,7 +30,7 @@ spec:
             httpGet:
               port: 9113
         - name: nginx-exporter
-          image: nginx/nginx-prometheus-exporter:0.11.0
+          image: nginx/nginx-prometheus-exporter:1.4.0
           ports:
             - containerPort: 9113
           env: