[pierpman]

Description

Fixes a critical vulnerability (Dependabot alert #169) by bumping vitest and @vitest/coverage-v8 from ^3.1.3 to ^3.2.7 in package.json.

.npmrc and .yarnrc are added to .gitignore to prevent accidental commits of local registry configuration files.

Additional context (optional)

This upgrade addresses a critical security vulnerability reported by Dependabot. Vitest 3.2.x also includes bug fixes, performance improvements, and new features over 3.1.x. Keeping these two packages in sync ensures compatibility between the test runner and the coverage provider.

The .npmrc/.yarnrc exclusions prevent developer-specific registry overrides (e.g. corporate Artifactory proxies) from being accidentally committed to the repository.

How to test

1. Install the updated dependencies:

   yarn install

2. Run the test suite to verify all existing tests pass:

   yarn test

3. Run the coverage report to confirm coverage collection still works as expected:

   yarn coverage

4. Verify there are no regressions or unexpected failures in the output.