[Backport 2.4] Release notes for 2.4.0

[opensearch-trigger-bot]

Backport eef1979 from #1259

[codecov-commenter]

Codecov Report

Merging #1263 (08d56df) into 2.4 (0ea635a) will increase coverage by 14.99%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##                2.4    #1263       +/-   ##
=============================================
+ Coverage     55.27%   70.27%   +14.99%     
  Complexity      292      292               
=============================================
  Files           294       42      -252     
  Lines         10180     2395     -7785     
  Branches       2343      248     -2095     
=============================================
- Hits           5627     1683     -3944     
+ Misses         4381      571     -3810     
+ Partials        172      141       -31     

Flag	Coverage Δ
dashboards-observability	?
opensearch-observability	70.27% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...mponents/flyout_components/trace_detail_render.tsx
...trace_analytics/components/common/color_palette.ts
...nents/helpers/__tests__/sampleDefaultNotebooks.tsx
...components/event_analytics/explorer/no_results.tsx
...nts/visualizations/charts/shared/shared_configs.ts
...lic/components/visualizations/charts/text/text.tsx
...c/components/metrics/redux/slices/metrics_slice.ts
...bility/common/query_manager/ast/expression/span.ts
...application_analytics/helpers/modal_containers.tsx
...alytics/components/common/plots/error_rate_plt.tsx
... and 242 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.