build: bump identity.rs dependencies

[nanderstabel]

Description of change

Blocked by:

• VC Data Model 2.0 with SD-JWT iotaledger/identity#1770

Links to any relevant issues

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How the change has been tested

Describe the tests that you ran to verify your changes.
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Definition of Done checklist

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• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes