Elastic Cloud on Kubernetes release notes

Review the changes, fixes, and more in each release of Elastic Cloud on Kubernetes.

• ECK 3.0.0 adds support for Elastic Stack version 9.0.0. Elastic Stack version 9.0.0 is not supported on ECK operators running versions earlier than 3.0.0.

• Add support for defining dnsPolicy and dnsConfig options for the ECK operator StatefulSet #7999
• Config: Allow escaping dots in keys via [unsplit.key] syntax #8512 (issue: #8499)
• Enable copying of ECK images to Amazon ECR to make it easier for users to find our own ECK operator in the AWS marketplace #8427
• Support new agent image path as of 9.0 #8518
• Remove ubi suffix for 9.x images #8509
• Remove support for 6.x Stack version #8507
• Log resourceVersion on Create and Update #8503
• Remove policyID validation #8449 (issue: #8446)
• Refactor APM server for 9.0.0 #8448 (issue: #8447)
• Improve error messages and events during Fleet setup #8350
• Validate updates to 9.0 go through 8.18 #8559 (issue: #8557)

• Correctly parse managed namespaces when specified as an environment variable #8513 (issue: #7542)

• [DOCS] Updates release notes title (#8599)
• Updates for Istio 1.24 (#8476)
• Fix unresolved attribute in ECK Quickstart (#8432)
• [Docs] Add synthetic monitoring example (#8385) (issue: #6294)
• [docs] Update heap dump command to use the most recent Java process (#8294)
• [DOC] Document the need for an ingest node for Enterprise Search analytics (#8271)

• Update golang.org/x/net package to 0.38.0 (#8591)
• fix(deps): update module go.elastic.co/apm/v2 to v2.7.0 (#8576)
• chore(deps): update registry.access.redhat.com/ubi9/ubi-minimal docker tag to v9.5-1741850109 (#8544)
• fix(deps): update module golang.org/x/oauth2 to v0.28.0 (#8528)
• fix(deps): update module github.com/gkampitakis/go-snaps to v0.5.11 (#8524)
• fix(deps): update module github.com/spf13/cobra to v1.9.1 (#8523)
• fix(deps): update module github.com/prometheus/client_golang to v1.21.1 (#8520)
• fix(deps): update module github.com/jonboulle/clockwork to v0.5.0 (#8519)
• fix(deps): update module github.com/hashicorp/vault/api to v1.16.0 (#8517)
• fix(deps): update module github.com/google/go-cmp to v0.7.0 (#8516)
• fix(deps): update module helm.sh/helm/v3 to v3.17.1 (#8505)
• chore(deps): update wolfi (versioned) (#8504)
• Bump github.com/go-jose/go-jose/v4 from 4.0.1 to 4.0.5 (#8488)
• fix(deps): update module github.com/go-git/go-git/v5 to v5.14.0 (#8487)
• fix(deps): update k8s (#8486)
• chore(deps): update docker.elastic.co/ci-agent-images/serverless-docker-builder:0.4.0 docker digest to 730f062 (#8483)
• fix(deps): update module github.com/spf13/pflag to v1.0.6 (#8468)
• Update module github.com/gkampitakis/go-snaps to v0.5.10 (#8467)
• chore(deps): update dependency go to v1.24.1 (#8454)
• chore(deps): update docker.elastic.co/wolfi/go docker tag to v1.24 (#8453)
• fix(deps): update module go.elastic.co/apm/v2/* to v2.6.3 (#8440)
• chore(deps): update wolfi to v1.23.5-r1 (#8434)
• Bump golang.org/x/crypto from 0.29.0 to 0.31.0 (#8334)
• fix(deps): update module github.com/prometheus/common to v0.61.0 (#8333)
• fix(deps): update module github.com/magiconair/properties to v1.8.9 (#8307)
• chore(deps): update docker.elastic.co/wolfi/go docker tag to v1.23.4 (#8306)
• fix(deps): update module github.com/stretchr/testify to v1.10.0 (#8282)