Update CONTRIBUTING.md

[brocollie08]

Update required NDK version

Change Type (required)

Indicate the type of change your pull request is:

• patch
• minor
• major
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Does your PR have any documentation updates?

• Updated docs
• No Update needed
• Unable to update docs

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.77%. Comparing base (d2cd181) to head (30bff80).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #596      +/-   ##
==========================================
- Coverage   89.77%   89.77%   -0.01%     
==========================================
  Files         331      331              
  Lines       19904    19904              
  Branches     1949     1949              
==========================================
- Hits        17869    17868       -1     
- Misses       2021     2022       +1     
  Partials       14       14              

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