chore(gateway): update migration handler

[cjcobb23]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 85.18519% with 4 lines in your changes missing coverage. Please review.

Project coverage is 93.47%. Comparing base (c2a82fd) to head (9341a27).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
contracts/gateway/src/contract.rs	85.18%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #714      +/-   ##
==========================================
+ Coverage   93.43%   93.47%   +0.03%     
==========================================
  Files         234      233       -1     
  Lines       34900    34875      -25     
==========================================
- Hits        32610    32600      -10     
+ Misses       2290     2275      -15     

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