build(deps-dev): bump @types/node from 25.9.3 to 26.0.0 in /clients/js (#439)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 25.9.3 to 26.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 26.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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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 @@
         "@solana/kit": "^6.10.0",
         "@solana/kit-plugin-litesvm": "^0.10.0",
         "@solana/kit-plugin-signer": "^0.10.0",
-        "@types/node": "^25",
+        "@types/node": "^26",
         "oxfmt": "^0.55.0",
         "oxlint": "^1.70.0",
         "oxlint-tsgolint": "^0.23.0",