Elastic Cloud on Kubernetes version 2.16.0

Make Helm chart consistent in respect to handling of spec. (eck-fleet-server) #8285
Make Helm chart consistent in respect to handling of spec. (eck-beats) #8248
Make Helm chart consistent in respect to handling of spec. (eck-agent) #8246
Make Helm chart consistent in respect to handling of spec. (eck-kibana) #8192
Set default hardened security context for Kibana. #8086 (issue: #7787)
Add a setting in the Helm chart to deploy FIPS compliant ECK image. #8272 (issue: #8204)
Remove kube-rbac-proxy and adjust default approach to securing the metrics endpoint. #8302 (issue: #8279)

Optimization of the quickstart sections. #8128
Optimization of overview and support help. #8130
Remove node.remote_cluster_client from examples. #8274
Update the guidance for the stack config policy/role mapping issue. #8247
Update stack monitoring documentation. #8198
Document remote clusters using API keys. #8181 (issue: #8167)
Add Kibana to the Enterprise search sample. #8166 (issue: #5090)
Add explanation line for es ingress 9300 port. #8164 (issue: #7833)
Clarify high availability recommendations in Elasticsearch orchestration docs. #8151
Add note on how to access generated Kibana encryption keys. #8150 (issue: #8129)
Move Troubleshooting section to top level of table of contents. #8145 (issue: #8131)
Add is_managed: true to Agent policies. #8125 (issue: #7290)
Adds a secure settings link to K8s docs and note the need to be base64 encoded. #8113

Enterprise Search transition to Elasticsearch #8323 (issue: #8308)
fix(deps): update module golang.org/x/crypto to v0.29.0 #8240
chore(deps): update registry.access.redhat.com/ubi9/ubi-minimal docker tag to v9.5-1731604394 #8237
chore(deps): update go to v1.23.3 #8190
fix(deps): update module github.com/prometheus/common to v0.60.1 #8178
fix(deps): update k8s versions #8163
chore(deps): update wolfi (versioned) #8162
fix(deps): update module github.com/prometheus/client_golang to v1.20.5 #8133
fix(deps): Bump golang.org/x/crypto from 0.29.0 to 0.31.0 #8341