chore: update to rust version 1.81.0

[cgorenflo]

Description

Todos

• Unit tests
• Manual tests
• Documentation
• Connect epics/issues

Convention Checklist

• Each contract should have a client mod for others to interact with it.
• Derive macros
  • EnsurePermissions: Contract permission control
  • IntoContractError: Conversion from custom contract errors to axelar_wasm_std::error::ContractError
  • IntoEvent: Event serialization
  • migrate_from_version: Contract version management in the migrate function
• The state mod and msg mod should use separate data structures so that internal state changes do not break the contract interface. Check out the interchain-token-service for reference.
  • msg.rs should never use any type from the state.rs
  • Shared types must be defined in a separate exported mod. If those types have already been defined somewhere else, then they should get re-exported in the exported mod

Steps to Test

Expected Behaviour

Notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.36%. Comparing base (870d1df) to head (cb911c5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #755      +/-   ##
==========================================
- Coverage   93.56%   93.36%   -0.20%     
==========================================
  Files         225      225              
  Lines       36516    36353     -163     
==========================================
- Hits        34165    33941     -224     
- Misses       2351     2412      +61     

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