GOES TOGETHER WITH SR#1029713 !

- Update to 7.4.0:
- Added the ConstantKeyword, RankFeatures field types
- Added the ScriptScore query type
- Added UpdateByQueryResponse.success() method
- Added return_doc_meta parameter to Document.save() and
Document.update() for accessing the complete API response
- Added support for calendar_interval and fixed_interval to
DateHistogramFacet
- Added Document.exists() method
- Added support for the year interval to DateHistogramFacet
- Fixed issue where to_dict() should be called recursively on
Search.extras and **kwargs
- Fixed inverse of an empty Bool query should be MatchNone
- Fixed issue between retry_on_conflict and optimistic
concurrency control within Document.update()
- Update to 7.3.0:
- Added Intervals, MatchBoolPrefix, Shape, and Wrapper queries
- Added Boxplot, RareTerms, VariableWidthHistogram,
MedianAbsoluteDeviation, TTest, CumulativeCardinality,
Inference, MovingPercentiles, and Normalize aggregations
- Added __all__ and removed all star imports from
elasticsearch_dsl namespace to avoid leaking unintended names
- Fixed an issue where Object and Nested could mutate the inner
doc_class mapping
- Fixed a typo in query SpanContaining, previously was
SpanContainining
- Limit required (and buildrequired) elasticsearch to < 8
(gh#elastic/elasticsearch-dsl-py#1569).