Next dev cycle: 1.10.0

[0xnm]

What does this PR do?

We are going to release 1.9.0, so bumping version in the develop branch.

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 #170 (e43989c) into develop (301bfee) will decrease coverage by 0.17%. The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop     #170      +/-   ##
=============================================
- Coverage      86.63%   86.46%   -0.17%     
+ Complexity       177      176       -1     
=============================================
  Files             21       21              
  Lines            576      576              
  Branches          72       72              
=============================================
- Hits             499      498       -1     
  Misses            49       49              
- Partials          28       29       +1     

Impacted Files	Coverage Δ
...m/datadog/gradle/plugin/internal/OkHttpUploader.kt	84.03% <ø> (ø)

... and 1 file with indirect coverage changes