chore: bump chain-sdk dependencies

[troian]

Description

Closes: #XXXX

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow-up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Review profile: CHILL

Plan: Pro

Run ID: 2b208dbe-528a-4eaf-a806-f04ef4490653

📥 Commits

Reviewing files that changed from the base of the PR and between 7b0feb3 and 00630db.

⛔ Files ignored due to path filters (1)

• go.sum is excluded by !**/*.sum

📒 Files selected for processing (1)

• go.mod

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Walkthrough

Three Go module dependencies were upgraded from pre-release pseudo-versions to stable release v0.2.0: pkg.akt.dev/go, pkg.akt.dev/go/cli, and pkg.akt.dev/go/sdl. No other module declarations were modified.

Changes

Cohort / File(s)	Summary
Dependency Version Updates go.mod	Updated three modules from beta pre-release versions (v0.2.0-b21, v0.2.0-b16, v0.2.0-b2) to stable release v0.2.0.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 Three beta versions, now set free,
Stable releases, as they should be!
From b-marks to v0.2.0 clean,
The finest code I've ever seen! 🎉

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The description contains the repository's default PR template with placeholder content and an unchecked author checklist, providing no substantive details about the dependency bump changes.	Add a meaningful description explaining which dependencies were bumped, why they were bumped, and any compatibility or breaking changes introduced by the update.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: bumping chain-SDK dependencies from pre-release to stable versions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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