chore: remove redundant direct dependency on @typescript-eslint/parser

[noritaka1166]

What does this PR do?

Removes the redundant direct devDependency on @typescript-eslint/parser and updates the lockfile.

The dependency was introduced in commit 686efcb (“migrate to eslint”) on June 13, 2020, when .eslintrc.js explicitly selected it as the parser.

The direct dependency became unnecessary in commit 3ef7419 (“Upgrade eslint to version 9”) on May 19, 2026. That commit replaced .eslintrc.js with eslint.config.mjs and switched to typescript-eslint’s recommended configuration. typescript-eslint provides the parser as a dependency, so ESLint continues to use it after this change.

What issues does this PR fix or reference?

None.

Is it tested? How?

• npm run lint passes.
• npm ls @typescript-eslint/parser confirms the parser remains a transitive dependency of typescript-eslint.

[shin19991207]

You're right. I checked https://typescript-eslint.io/packages/typescript-eslint/. typescript-eslint already depends on @typescript-eslint/parser, so the direct dependency is redundant.

Thanks, Noritaka!