feat(container): update image ghcr.io/unpoller/unpoller to v2.19.0 (#900)

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

Author: renovate[bot]

kubernetes/apps/observability/unpoller/app/helmrelease.yaml

@@ -34,7 +34,7 @@ spec:
           app:
             image:
               repository: ghcr.io/unpoller/unpoller
-              tag: v2.16.0@sha256:bfe3eee9396919165f8dfe8282dfc7d30b27308748e0d6bb5c90aabc4dd36e3e
+              tag: v2.19.0@sha256:6b481094a15d6da4d4b701ba5cb2f8358f307a0c438c8e84b4b132b36879ff77
             env:
               TZ: ${TIMEZONE}
               UP_UNIFI_DEFAULT_ROLE: home-ops