Remove yeoman-assert

[martincostello]

Remove deprecated yeoman-assert package whose functionality is now part of yeoman-test.

[Copilot]

Pull request overview

This PR removes the deprecated yeoman-assert package from the project's dependencies, migrating to Node.js's built-in assert module for test assertions. The yeoman-assert package has been deprecated as its functionality has been integrated into yeoman-test.

Key Changes:

• Removed yeoman-assert from package.json and package-lock.json dependencies
• Updated imports in test-app.js to use Node.js built-in assert module
• Migrated three assert.strictEqual() calls to use the standard assert module

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 5 comments.

File	Description
package.json	Removed deprecated yeoman-assert dependency from devDependencies
package-lock.json	Removed yeoman-assert package entry and metadata from lockfile
test/test-app.js	Updated imports and migrated assertion calls from yeoman-assert to Node.js assert

Comments suppressed due to low confidence (1)

test/test-app.js:3

• Unused import assert.

import assert from 'yeoman-test';

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