Next dev iteration

[0xnm]

What does this PR do?

This PR bumps version in develop branch to 2.9.0.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

Merging #1972 (0e6d8be) into develop (0706c32) will decrease coverage by 0.19%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1972      +/-   ##
===========================================
- Coverage    83.58%   83.39%   -0.19%     
===========================================
  Files          489      489              
  Lines        17932    17931       -1     
  Branches      2671     2671              
===========================================
- Hits         14987    14952      -35     
- Misses        2226     2243      +17     
- Partials       719      736      +17     

see 25 files with indirect coverage changes