Move CSVHelper under billing ownership

[djsmith85]

📔 Objective

Looking at the Dependency Dashboard I noticed that CSVHelperhad no owner. Looking at the imports it's currently only used by @bitwarden/team-billing-dev. Assigning them the ownership.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.00%. Comparing base (8994d1d) to head (eb86351).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5156      +/-   ##
==========================================
+ Coverage   42.98%   43.00%   +0.01%     
==========================================
  Files        1446     1447       +1     
  Lines       66150    66164      +14     
  Branches     6060     6062       +2     
==========================================
+ Hits        28437    28455      +18     
+ Misses      36431    36427       -4     
  Partials     1282     1282              

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[github-actions]

Checkmarx One – Scan Summary & Details – df7b88ee-809f-4c63-96a9-2a57376f1417

Fixed Issues

Severity	Issue	Source File / Package
	CSRF	/src/Api/Auth/Controllers/AccountsController.cs: 967
	Log_Forging	/src/Api/Auth/Controllers/AccountsController.cs: 967