feat: support P384

[beltram]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

Support P384 EcDSA signature scheme

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[codecov-commenter]

Codecov Report

Merging #3 (7b2f8d8) into main (ceeb171) will increase coverage by 6.48%.
The diff coverage is 94.73%.

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   77.19%   83.67%   +6.48%     
==========================================
  Files           7        7              
  Lines          57       98      +41     
==========================================
+ Hits           44       82      +38     
- Misses         13       16       +3