[PM-22721] Update sdk for breaking init change

[quexten]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-22721

📔 Objective

Init now takes an optional signing key. This is set to undefined for now, to unblock SDK updates.

SDK PR:
bitwarden/sdk-internal#207

📸 Screenshots

⏰ 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

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Checkmarx One – Scan Summary & Details – 25d1a0b8-906d-4bde-ab72-e2639256e2f0

Great job, no security vulnerabilities found in this Pull Request

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.90%. Comparing base (8505686) to head (9eabdc5).
Report is 6 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15212      +/-   ##
==========================================
- Coverage   36.91%   36.90%   -0.01%     
==========================================
  Files        3219     3219              
  Lines       92909    92909              
  Branches    13965    13965              
==========================================
- Hits        34297    34290       -7     
- Misses      57186    57193       +7     
  Partials     1426     1426              

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