feat: use AxelarGMPExecutable in Governance

[ahramy]

AXE-4750

• Use the new executable for AxelarServiceGovernance in axelar-gmp-sdk-solidity
• Bump the package.json version to 5.11.0

Unit Test All Passed:

EVM_VERSION="london" npm run test;
  359 passing (7s)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.54%. Comparing base (849152c) to head (4b58997).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #184 +/- ## ========================================== - Coverage 98.68% 98.54% -0.14% ========================================== Files 48 48 Lines 759 758 -1 Branches 157 157 ========================================== - Hits 749 747 -2 Misses 1 1 - Partials 9 10 +1 ```

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