chore: Update outdated GitHub Actions versions

[pgoslatara]

Before submitting the PR, please make sure you do the following

• It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
• Prefix your PR title with feat:, fix:, chore:, or docs:.
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.
• If this PR changes code within packages/svelte/src, add a changeset (npx changeset).

Tests and linting

• Run the tests with pnpm test and lint the project with pnpm lint

Changes

• Updated actions/checkout from v4 to v6 in .github/workflows/ci.yml
• Updated actions/checkout from v4 to v6 in .github/workflows/release.yml
• Updated actions/checkout from v4 to v6 in .github/workflows/pkg.pr.new.yml
• Updated actions/setup-node from v4 to v6 in .github/workflows/release.yml
• Updated actions/upload-artifact from v4 to v6 in .github/workflows/pkg.pr.new.yml
• Updated actions/setup-node from v4 to v6 in .github/workflows/pkg.pr.new.yml
• Updated actions/download-artifact from v4 to v7 in .github/workflows/pkg.pr.new-comment.yml
• Updated actions/github-script from v6 to v8 in .github/workflows/pkg.pr.new-comment.yml
• Updated actions/setup-node from v4 to v6 in .github/workflows/ci.yml
• Updated actions/github-script from v6 to v8 in .github/workflows/pkg.pr.new.yml

[changeset-bot]

⚠️ No Changeset found

Latest commit: a8db788

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