build(deps-dev): bump @solana/kit from 6.5.0 to 6.6.0 (#281)

Bumps [@solana/kit](https://github.com/anza-xyz/kit) from 6.5.0 to 6.6.0.
- [Release notes](https://github.com/anza-xyz/kit/releases)
- [Commits](anza-xyz/kit@v6.5.0...v6.6.0)

---
updated-dependencies:
- dependency-name: "@solana/kit"
  dependency-version: 6.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

clients/js/package.json

@@ -48,7 +48,7 @@
     "devDependencies": {
         "@eslint/js": "^10.0.1",
         "@solana-program/system": "^0.12.0",
-        "@solana/kit": "^6.5.0",
+        "@solana/kit": "^6.6.0",
         "@solana/sysvars": "^6.6.0",
         "@types/node": "^25.5.0",
         "ava": "^7.0.0",