chore: update import paths on v11.x

[p0mvn]

Closes: #2366

What is the purpose of the change

Updates Go import paths.

This is not made by osmo-bot because there was a problem with having the script backported 1:1 from main. However, it included query code gen logic that does not exist on v11.x. So I had to modify the script and run it locally instead of using automation

Testing and Verifying

This change is a trivial rework / code cleanup without any test coverage.

Documentation and Release Note

• Does this pull request introduce a new feature or user-facing behavior changes? no
• Is a relevant changelog entry added to the Unreleased section in CHANGELOG.md? yes
• How is the feature or change documented? not applicable