feat: Bump up dependencies

[dudong2]

Closes: #XXX

Description

Key dependency changes:

• Cosmos-SDK v0.50.6 to v0.50.8
• CometBFT (Tendermint) v0.38.6 to v0.38.9
• ibc-go v8.2.1 to v8.3.2
• iavl v1.1.2 to v1.1.4
  • ref. feat: bump up iavl v1.1.4 Canto#77

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For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

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For admin use:

• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
• Reviewers assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)