chore(database): raised version of sqlalchemy-kusto

[xneg]

• Raised version of sqlalchemy-kusto to 2.0.0.
• Added information about kusto connection in docs/databases.

SUMMARY

Since sqlalchemy version was raised to >=1.4 we need to use sqlalchemy-kusto>=2.0.0 which is compatible with sqlalchemy>=1.4.

[codecov]

Codecov Report

Merging #21370 (ba423b0) into master (b302818) will decrease coverage by 0.17%.
The diff coverage is n/a.

❗ Current head ba423b0 differs from pull request most recent head 1e15a12. Consider uploading reports for the commit 1e15a12 to get more accurate results

@@            Coverage Diff             @@
##           master   #21370      +/-   ##
==========================================
- Coverage   66.61%   66.43%   -0.18%     
==========================================
  Files        1791     1791              
  Lines       68538    68538              
  Branches     7310     7310              
==========================================
- Hits        45655    45536     -119     
- Misses      21002    21121     +119     
  Partials     1881     1881              

Flag	Coverage Δ
hive	?
mysql	80.83% <ø> (ø)
postgres	80.88% <ø> (ø)
presto	?
python	81.00% <ø> (-0.36%)	⬇️
sqlite	79.43% <ø> (ø)
unit	?

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

Impacted Files	Coverage Δ
superset/db_engines/hive.py	0.00% <0.00%> (-85.19%)	⬇️
superset/db_engine_specs/hive.py	71.09% <0.00%> (-16.02%)	⬇️
superset/db_engine_specs/presto.py	81.32% <0.00%> (-6.63%)	⬇️
superset/models/sql_lab.py	74.90% <0.00%> (-2.00%)	⬇️
superset/initialization/__init__.py	90.00% <0.00%> (-1.73%)	⬇️
superset/connectors/sqla/models.py	89.90% <0.00%> (-0.70%)	⬇️
superset/db_engine_specs/base.py	88.01% <0.00%> (-0.32%)	⬇️
superset/models/core.py	88.81% <0.00%> (-0.24%)	⬇️
superset/utils/core.py	89.88% <0.00%> (-0.12%)	⬇️

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[villebro]

LGTM, thanks especially for the added docs!