[Upgrade] Switch to v0.52 cosmos-sdk

[okdas]

Objective

The new version of cosmos-sdk is set to be released soon. They’ve released a release candidate with a stabilized API, allowing us to commence implementing the upgrade to the new version.

We’re currently on version 0.50.9.

Previously, we faced challenges in quickly upgrading to 0.50.10 due to an issue with mockgen (#865). While the latest stable version is 0.50.11, it might be advisable to directly jump to 0.52.0, as it will necessitate more significant changes to the codebase.

The upgrade guide can be found here.

Goals

• Use the latest and greatest.

Deliverables

• Upgrade cosmos-sdk dependency and related packages to v0.52.0.
• Resolve issues associated with an upgrade (e.g. mockgen)

Non-goals / Non-deliverables

• Implementing an x/upgrade code to upgrade our existing networks. This will be a separate effort.

General deliverables

• Comments: Add/update TODOs and comments alongside the source code so it is easier to follow.
• Testing: Add new tests (unit and/or E2E) to the test suite.
• Makefile: Add new targets to the Makefile to make the new functionality easier to use.
• Documentation: Update architectural or development READMEs; use mermaid diagrams where appropriate.

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Creator: @okdas
Co-Owners: @bryanchriswhite @Olshansk

[Olshansk]

@bryanchriswhite @okdas I'm going to ask for your help on this in February!