[deps] Billing: Update Braintree to 5.38.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Braintree	5.36.0 → 5.38.0

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Release Notes

braintree/braintree_dotnet (Braintree)

v5.38.0

Compare Source

• Add MiddleName to sender and receiver, and DateOfBirth to sender in transfer on Transaction

v5.37.0

Compare Source

• Add ProcessingMerchantCategoryCode to TransactionRequest
• Add missing transfer validation error codes in Transaction

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Configuration

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This PR was generated by Mend Renovate. View the repository job log.

[bitwarden-bot]

Internal tracking:

• ID: PM-30027
• Link: https://bitwarden.atlassian.net/browse/PM-30027

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.71%. Comparing base (69d72c2) to head (6dac2f9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6762      +/-   ##
==========================================
- Coverage   58.55%   54.71%   -3.85%     
==========================================
  Files        1925     1925              
  Lines       85669    85669              
  Branches     7669     7669              
==========================================
- Hits        50162    46872    -3290     
- Misses      33649    37013    +3364     
+ Partials     1858     1784      -74     

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