Bump natsio/nats-server-config-reloader in /helm/charts/nats (#922)

Bumps natsio/nats-server-config-reloader from 0.15.0 to 0.15.1.

---
updated-dependencies:
- dependency-name: natsio/nats-server-config-reloader
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

helm/charts/nats/values.yaml

@@ -353,7 +353,7 @@ reloader:
   enabled: true
   image:
     repository: natsio/nats-server-config-reloader
-    tag: 0.15.0
+    tag: 0.15.1
     pullPolicy:
     registry:
 
@@ -378,7 +378,7 @@ promExporter:
   enabled: false
   image:
     repository: natsio/prometheus-nats-exporter
-    tag: 0.15.0
+    tag: 0.15.1
     pullPolicy:
     registry: