update lakekeeper/0.11.0

- chart 0.8.1 → 0.11.0 (appVersion 0.10.4 → 0.12.2)
- deps: postgres 1.5.8 → 1.5.13, openfga 0.2.44 → 0.2.62
- ingress: Kong → APISIX (use-regex + path /.*, cluster-issuer)
- openfga.playground 비활성화 (preshared 인증 패닉 방지)
- breaking=false, custom-values 키 전부 호환

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

manifests/helm/lakekeeper/0.11.0/templates/_validations.tpl

@@ -0,0 +1,5 @@
+{{/* Require that .Values.authz.type is either "allowall" or "openfga" */}}
+{{- if not (or (eq .Values.authz.backend "allowall") (eq .Values.authz.backend "openfga")) }}
+{{ required "authz.backend must be one of `allowall` or `openfga`. " nil }}
+{{- end }}
+