chore(ci): updated workflows

[egordidenko]

Description

Checklist

• Tests (if applicable)
• Documentation (if applicable)
• Changelog stub (or use conventional commit messages)

[Copilot]

Pull Request Overview

This PR makes minor adjustments to the CI and dependency setup to update the workflows.

• Updates the fallback prop type in the ConditionalSuspense component for broader compatibility.
• Modifies the dependency version specification for "@uploadcare/file-uploader" in package.json.
• Upgrades the Node version and changes the install command in the CI workflow.

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/react-uploader/src/SSR/ConditionalSuspense/ConditionalSuspense.tsx	Updates fallback type to React.ReactNode for enhanced compatibility.
packages/react-uploader/package.json	Removes caret notation for fixed version dependency.
.github/workflows/checks.yml	Updates Node version to 20 and changes install command from npm ci to npm i.

Comments suppressed due to low confidence (1)

.github/workflows/checks.yml:19

• Using 'npm i' in a CI environment may lead to non-deterministic builds compared to 'npm ci'. Consider reverting to 'npm ci' to ensure reproducibility and faster installations.

        run: npm i