chore: fix linter warnings (backport #3311)

[mergify]

This is an automatic backport of pull request #3311 done by Mergify.
Cherry-pick of 5a67efc has failed:

On branch mergify/bp/release/v5.3.x/pr-3311
Your branch is up to date with 'origin/release/v5.3.x'.

You are currently cherry-picking commit 5a67efc4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   modules/apps/27-interchain-accounts/controller/ibc_middleware_test.go
	modified:   modules/apps/27-interchain-accounts/controller/keeper/account_test.go
	modified:   modules/apps/27-interchain-accounts/controller/keeper/keeper_test.go
	modified:   modules/apps/27-interchain-accounts/host/ibc_module_test.go
	modified:   modules/apps/27-interchain-accounts/host/keeper/keeper_test.go
	modified:   modules/apps/27-interchain-accounts/host/types/params.go
	modified:   modules/apps/27-interchain-accounts/types/genesis.go
	modified:   modules/apps/29-fee/ibc_middleware.go
	modified:   modules/apps/29-fee/ica_test.go
	modified:   modules/apps/29-fee/types/fee.go
	modified:   modules/apps/29-fee/types/msgs.go
	modified:   modules/apps/transfer/keeper/keeper.go
	modified:   modules/apps/transfer/keeper/mbt_relay_test.go
	modified:   modules/core/03-connection/types/genesis.go
	modified:   modules/core/04-channel/keeper/handshake.go
	modified:   modules/core/04-channel/keeper/keeper.go
	modified:   modules/core/05-port/keeper/keeper.go
	modified:   modules/core/23-commitment/types/merkle.go
	modified:   modules/light-clients/07-tendermint/types/misbehaviour.go
	modified:   testing/mock/mock.go
	modified:   testing/path.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   .github/workflows/golangci.yml
	both modified:   .golangci.yml
	both modified:   modules/apps/27-interchain-accounts/controller/keeper/account.go
	both modified:   modules/apps/27-interchain-accounts/controller/keeper/genesis.go
	deleted by us:   modules/apps/27-interchain-accounts/controller/migrations/v6/migrations_test.go
	both modified:   modules/apps/27-interchain-accounts/controller/types/params.go
	both modified:   modules/apps/27-interchain-accounts/host/keeper/genesis.go
	both modified:   modules/apps/27-interchain-accounts/module.go
	both modified:   modules/apps/transfer/keeper/relay_test.go
	deleted by us:   modules/core/02-client/migrations/v7/store.go
	both modified:   modules/core/04-channel/keeper/handshake_test.go
	both modified:   modules/core/keeper/migrations.go
	both modified:   modules/core/keeper/msg_server.go
	both modified:   modules/core/module.go
	deleted by us:   modules/light-clients/06-solomachine/misbehaviour_handle.go
	deleted by us:   modules/light-clients/07-tendermint/client_state.go
	both modified:   testing/chain.go
	both modified:   testing/endpoint.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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