MongoDB Atlas Operator 2.15.0

## New Features

Service Accounts support – AKO can now authenticate with Atlas using Atlas Service Accounts (client credentials), as an alternative to API keys. #3323 by @MaciejKaras

Improvements and fixes

Datadog third-party integration – Added missing sendQueryStatsMetrics and sendUserProvidedResourceTags fields to the Datadog integration spec in AtlasProject. #3353 by @josvazg
FlexCluster stuck in Initial state – Fixed a race condition where concurrent reconciles triggered by simultaneous FlexCluster + Group creation caused a DUPLICATE_CLUSTER_NAME error from Atlas, leaving the cluster permanently stuck. #3367 by @josvazg
AtlasTeam duplicate project entries in status – Fixed leftover duplicate status.projects entries that persisted after upgrading from pre-v2 operator versions. #3362 by @josvazg
AtlasFederatedAuth role validation – Removed overly restrictive CRD-level validation on the role field, allowing all valid Atlas federated authentication roles. #3351 by @igor-karpukhin
AtlasPrivateEndpoint resource - Added the missing portMappingEnabled and supportedRegions fields. #3378 by @igor-karpukhin
Add extraArgs to Helm Chart values to pass CLI arguments. #3382 by @josvazg
Ensure to either return errors or reconcile results. #2533 by @s-urbaniak
Centralize external-id annotation lookup. #3345 by @helderjs
Updated AtlasDataFederation CRD to the latest Atlas Go SDK. #3379 by @igor-karpukhin

Images can be found in: https://quay.io/mongodb/mongodb-atlas-kubernetes-operator
Supported Kubernetes versions updated in this release: 1.33 - 1.35
Supported OpenShift versions updated: 4.21
See our full compatibility matrix here.