Update AGP to 8.3.1

[0xnm]

What does this PR do?

This PR updates AGP version to 8.3.1.

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 #229 (334a5e0) into develop (df968e6) will decrease coverage by 0.13%. The diff coverage is n/a.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #229 +/- ## ============================================= - Coverage 81.34% 81.21% -0.13% + Complexity 203 202 -1 ============================================= Files 26 26 Lines 793 793 Branches 104 104 ============================================= - Hits 645 644 -1 Misses 112 112 - Partials 36 37 +1 ``` [see 1 file with indirect coverage changes](https://app.codecov.io/gh/DataDog/dd-sdk-android-gradle-plugin/pull/229/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog)