Prepare for beta 6 release

[maciaszczykm]

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[codecov]

Codecov Report

Merging #4544 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4544      +/-   ##
==========================================
+ Coverage   46.44%   46.45%   +0.01%     
==========================================
  Files         209      209              
  Lines        9646     9646              
  Branches      107      107              
==========================================
+ Hits         4480     4481       +1     
+ Misses       4893     4892       -1     
  Partials      273      273

Impacted Files	Coverage Δ
...p/backend/integration/metric/common/aggregation.go	90.9% <0%> (+1.81%)	⬆️

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