Release 2.15.1

What's Changed

• Increase robustness of transition tests by watching the dead letter queue by @SylvainSenechal in #2399
• Improve kafka cleaner test by @SylvainSenechal in #2404
• ctst: skip trailing 1s sleep when poll condition is met by @delthas in #2408
• Improve cache usage by @francoisferrand in #2416
• Use skopeo from ubuntu repo by @francoisferrand in #2417
• Hash both kafka and kafka-connect subtrees in BUILD_TREE_HASH by @delthas in #2411
• mongodb: vendor chart via git subtree from bitnami/charts by @delthas in #2420
• mongodb: bump mongodb-sharded chart to 9.4.14 by @delthas in #2424
• ✨(ZENKO-5262) Define new alerts and enable monitor for Zenko Operator by @DarkIsDude in #2392
• feat(mongodb): alert on createIndexes command failures by @delthas in #2431
• generate cucumber dashboard by @SylvainSenechal in #2401
• Add sorbet dashboard by @francoisferrand in #2429
• move keycloak hook seeder from cli-testing to zenko by @SylvainSenechal in #2422
• ZENKO-5290: fix stale github.com/scality/S3 URL references by @tcarmet in #2434
• Bump & release 2.14.5 by @francoisferrand in #2437

Full Changelog: 2.15.0...2.15.1