fix(server): properly parse multiple gas config(backport cosmos/cosmos-sdk#18537)

[jaeseung-bae]

Description

• fix for multiple gas parsing
  • cosmos/cosmos-sdk#18537

Motivation and context

How has this been tested?

Screenshots (if appropriate):

Checklist:

• [x] I followed the contributing guidelines and code of conduct.
• [x] I have added a relevant changelog to CHANGELOG.md
• [ ] I have added tests to cover my changes.
• [ ] I have updated the documentation accordingly.
• [ ] I have updated API documentation client/docs/swagger-ui/swagger.yaml

[CLAassistant]

All committers have signed the CLA.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 70.39%. Comparing base (55b6566) to head (58cf3aa).

Additional details and impacted files

[](https://app.codecov.io/gh/Finschia/finschia-sdk/pull/1337?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Finschia) ```diff @@ Coverage Diff @@ ## main #1337 +/- ## ======================================= Coverage 70.38% 70.39% ======================================= Files 643 643 Lines 54793 54789 -4 ======================================= + Hits 38564 38566 +2 + Misses 14054 14047 -7 - Partials 2175 2176 +1 ``` | [Files](https://app.codecov.io/gh/Finschia/finschia-sdk/pull/1337?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Finschia) | Coverage Δ | | |---|---|---| | [server/config/toml.go](https://app.codecov.io/gh/Finschia/finschia-sdk/pull/1337?src=pr&el=tree&filepath=server%2Fconfig%2Ftoml.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Finschia#diff-c2VydmVyL2NvbmZpZy90b21sLmdv) | `15.78% <ø> (ø)` | | | [server/config/config.go](https://app.codecov.io/gh/Finschia/finschia-sdk/pull/1337?src=pr&el=tree&filepath=server%2Fconfig%2Fconfig.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Finschia#diff-c2VydmVyL2NvbmZpZy9jb25maWcuZ28=) | `46.32% <33.33%> (+2.75%)` | :arrow_up: |