[DOP-13737] Downgrade Greenplum package to 2.2.0

[dolfinus]

Change Summary

Greenplum package 2.3.0 introduced deadlock while writing data to Greenplum 6.x. Temporary downgrade it to 2.2.0 until fix will be released.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.41%. Comparing base (dabcc48) to head (9b80598).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #239      +/-   ##
===========================================
+ Coverage    94.39%   94.41%   +0.02%     
===========================================
  Files          204      204              
  Lines         7882     7882              
  Branches      1403     1403              
===========================================
+ Hits          7440     7442       +2     
+ Misses         317      316       -1     
+ Partials       125      124       -1     

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