Update Datadog Gradle Plugin to version 1.20.0

[dd-octo-sts]

This PR has been created automatically by the CI
Updating Datadog Gradle Plugin from version 1.19.0 to version 1.20.0: diff

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.01%. Comparing base (cff098e) to head (22c107c).
⚠️ Report is 4 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #443      +/-   ##
=============================================
- Coverage      76.20%   76.01%   -0.19%     
+ Complexity       283      281       -2     
=============================================
  Files             35       35              
  Lines           1063     1063              
  Branches         130      130              
=============================================
- Hits             810      808       -2     
- Misses           194      195       +1     
- Partials          59       60       +1     

see 3 files with indirect coverage changes

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