fix: update smart contract event

[atanmarko]

Description

Update sequencer smart contract dependency for CrossSubnetMessageSent event

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 70.57%. Comparing base (2aaa500) to head (1155092).
Report is 2 commits behind head on main.

Files	Patch %	Lines
...pos-sequencer-subnet-client/src/subnet_contract.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #462      +/-   ##
==========================================
- Coverage   71.21%   70.57%   -0.64%     
==========================================
  Files         223      223              
  Lines       12278    12406     +128     
==========================================
+ Hits         8744     8756      +12     
- Misses       3534     3650     +116     

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