Update gradle to 8.6

[buenaflor]

📜 Description

Update gradle

💡 Motivation and Context

Closes #148

💚 How did you test it?

CI

📝 Checklist

You have to check all boxes before merging:

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.

🔮 Next steps

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.77%. Comparing base (5f645f3) to head (94f1894).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #197   +/-   ##
=======================================
  Coverage   77.77%   77.77%           
=======================================
  Files          27       27           
  Lines         432      432           
  Branches       56       56           
=======================================
  Hits          336      336           
  Misses         70       70           
  Partials       26       26           

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