chore(deps): replace dependency @tsconfig/node18 with @tsconfig/node20

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@tsconfig/node18 (source) → @tsconfig/node20	devDependencies	replacement	^18.0.0 → ^20.1.0

This is a special PR that replaces @tsconfig/node18 with the community suggested minimal stable replacement version.

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[dtoxvanilla1991]

@copilot It is a dev-dep, so actual build wont break but check if anything migration is required.

[Copilot]

@copilot It is a dev-dep, so actual build wont break but check if anything migration is required.

Checked in commit fc79ac4: no migration changes are required. I verified this by running corepack pnpm lint, corepack pnpm test -- --run, and corepack pnpm build successfully, and there are no tsconfig files extending @tsconfig/node18 that need updates.