Fix Byte Buddy dependency scope for unit testing

[Ananya2]

Issue
One of the recently added testing dependencies (Byte Buddy 1.15.11) was left with the default compile scope instead of test. This resulted in the ~8.1 MB jar being included in runtime artifacts.

Resolution
Updated the POM to set the scope to test for the missed dependency.

Validation:
mvn dependency:tree now shows Byte Buddy only under test scope

Closes #2754

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.70%. Comparing base (615c118) to head (7b07c86).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2755      +/-   ##
============================================
+ Coverage     51.63%   51.70%   +0.07%     
- Complexity     4084     4110      +26     
============================================
  Files           149      149              
  Lines         34241    34241              
  Branches       5718     5718              
============================================
+ Hits          17680    17706      +26     
- Misses        14092    14093       +1     
+ Partials       2469     2442      -27     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.