feat: update versions

[Swanand01]

Description

This PR updates the theme.json version and the packages version

Technical Details

1. theme.json is update to v3
2. package.json now uses ranges instead of exact versions

Checklist

• Check all existing scripts run, and no functionality breaks

Fixes/Covers issue

Fixes #670

[Copilot]

Pull request overview

Updates the theme’s theme.json to schema version 3 and refreshes the project’s Node tooling/dependency versions, switching from pinned versions to semver ranges to keep tooling current (Issue #670).

Changes:

• Bump theme.json "version" from 2 → 3 and adjust a few settings formatting/flags for v3.
• Update package.json dependencies/devDependencies to newer versions and use ^ ranges instead of exact pins.
• Remove the npm save-exact configuration from .npmrc.

Reviewed changes

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

File	Description
theme.json	Moves theme.json to v3 and adds/adjusts settings consistent with the updated schema.
package.json	Updates and loosens tooling/dependency version constraints to semver ranges.
.npmrc	Removes exact-version saving behavior to align with semver ranges.

Comments suppressed due to low confidence (1)

.npmrc:1

• After removing save-exact = true, this file becomes empty. Keeping an empty .npmrc is a bit confusing/no-op; consider deleting the .npmrc file entirely (or leave a comment explaining why it must exist).

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