Elastic Cloud on Kubernetes version 2.3.0

Allow providing cleartext passwords for creating Elasticsearch users #5613 (issue: #3056)
Support a globally shared CA #5539

Set status.ObservedGeneration from metadata.Generation:
- Elastic Maps #5536 (issue: #3392)
- EnterpriseSearch #5526 (issue: #3392)
- Elastic APM Server #5470 (issue: #3392)
Upgrade PodDisruptionBudget from v1beta1 to v1 #5709
Support disable-downgrade-validation for all relevant apps #5680 (issue: #5531)
Allow non-IPs in service spec to avoid noop updates #5663 (issue: #5657)
Add APM tracing for client-go requests to the Kubernetes API #5651
Add support for the desired nodes API #5650
Base ECK docker image on distroless instead of UBI by default #5580 (issue: #4561)
Added priority class and leader election to operator Helm chart #5538
Log info for service not found error when reconciling associations #5533

Do not use service accounts until Elasticsearch nodes have been upgraded #5830 (issue: #5684)
Ensure CA is always updated in HTTP Secret #5622 (issue: #5621)
Fix resources limits conversion in ToInt64() used for logging #5596
Fix non-closed http responses #5755

[a11y] Fix "below" occurrences #5714 (issue: #5306)
[a11y] Fix "above" occurrences #5672 (issue: #5306)
Change references to the master branch to main in the CONTRIBUTING guide. #5741
Fix Helm command examples in docs #5737
Update list of ECK versions that triggers a rolling restart #5715 (issue: #5648)
Update documentation pages that use the repository-gcs plugin #5700 (issue: #5457)
CronJob batch/v1beta1 no longer served in 1.25 #5685
Update documentation to customize pods #5660
Wrong indentation of the kibana config #5595
Update recommended reading Kubebuilder links #5593 (issue: #5584)
Add APM Server Deprecation Message #5575 (issue: #5419)
Update license usage data example #5569