Prepare release 1.7.0

[0xnm]

What does this PR do?

This PR prepares release 1.7.0.

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 #144 (e4806e3) into release/1.7.0 (e630ea8) will not change coverage. The diff coverage is n/a.

@@               Coverage Diff                @@
##             release/1.7.0     #144   +/-   ##
================================================
  Coverage            86.57%   86.57%           
  Complexity             178      178           
================================================
  Files                   21       21           
  Lines                  581      581           
  Branches                75       75           
================================================
  Hits                   503      503           
  Misses                  49       49           
  Partials                29       29           

Impacted Files	Coverage Δ
...m/datadog/gradle/plugin/internal/OkHttpUploader.kt	84.43% <ø> (ø)