ci: fix formatting and YAML lint scope

Lint tracked YAML files without scanning generated dependencies.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

prometheus-stack/k8s/traefik-alerts.yaml

@@ -57,4 +57,4 @@ spec:
             severity: warning
           annotations:
             summary: "Traefik TLS certificate expires soon"
-            description: "A TLS certificate managed by Traefik expires in less than 14 days (in {{ $value | humanizeDuration }})."
+            description: "A TLS certificate managed by Traefik expires in less than 14 days (in {{ $value | humanizeDuration }})."