* upstream/master:
  Validate tsdb's routing_path (elastic#79384)
  Adjust the BWC version for the return200ForClusterHealthTimeout field (elastic#79436)
  API for adding and removing indices from a data stream (elastic#79279)
  Exposing the ability to log deprecated settings at non-critical level (elastic#79107)
  Convert operator privilege license object to LicensedFeature (elastic#79407)
  Mute SnapshotBasedIndexRecoveryIT testSeqNoBasedRecoveryIsUsedAfterPrimaryFailOver (elastic#79456)
  Create cache files with CREATE_NEW & SPARSE options (elastic#79371)
  Revert "[ML] Use a new annotations index for future annotations (elastic#79151)"
  [ML] Use a new annotations index for future annotations (elastic#79151)
  [ML] Removing legacy code from ML/transform auditor (elastic#79434)
  Fix rate agg with custom `_doc_count` (elastic#79346)
  Optimize SLM Policy Queries (elastic#79341)
  Fix execution of exists query within nested queries on field with doc_values disabled (elastic#78841)
  Stricter UpdateSettingsRequest parsing on the REST layer (elastic#79227)
  Do not release snapshot file download permit during recovery retries (elastic#79409)
  Preserve request headers in a mixed version cluster (elastic#79412)
  Adjust versions after elastic#79044 backport to 7.x (elastic#79424)
  Mute BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests (elastic#79429)
  Fail on SSPL licensed x-pack sources (elastic#79348)

# Conflicts:
#	server/src/test/java/org/elasticsearch/index/TimeSeriesModeTests.java