Repository: storybook
Issue: Tests fail in Storybook repository on Windows
Labels: maintenance,windows

**Describe the bug**
In the Storybook repo, `yarn test` fails when run on a Windows PC. In particular, there are a lot of snapshot mismatches where the expected file path was Unix-style but the actual file path was Windows-style.

If development on Windows is not supported, that's fine, but the [Code Contributions page](https://storybook.js.org/docs/react/contribute/code) should mention this. 😉 Or maybe I'm just doing something wrong.

**To Reproduce**
1. Clone the Storybook repo.
2. `yarn install`
3. `yarn bootstrap --core` (succeeds)
4. `yarn test` (fails, log here: [storybook-jest-json.txt](https://github.com/storybookjs/storybook/files/7517240/storybook-jest-json.txt), it's actually a JSON file but GitHub didn't like that)



**System**
```text
System:
    OS: Windows 10 10.0.22000
    CPU: (12) x64 AMD Ryzen 5 2600 Six-Core Processor
  Binaries:
    Node: 16.13.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 3.0.0-git.20210727.hash-3cbbb672 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 8.1.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: 95.0.4638.69
    Edge: Spartan (44.22000.120.0), Chromium (95.0.1020.44)
  npmPackages:
    @storybook/addon-a11y: workspace:* => 6.4.0-beta.31
    @storybook/addon-actions: workspace:* => 6.4.0-beta.31
    @storybook/addon-backgrounds: workspace:* => 6.4.0-beta.31
    @storybook/addon-controls: workspace:* => 6.4.0-beta.31
    @storybook/addon-docs: workspace:* => 6.4.0-beta.31
    @storybook/addon-essentials: workspace:* => 6.4.0-beta.31
    @storybook/addon-interactions: workspace:* => 6.4.0-beta.31
    @storybook/addon-jest: workspace:* => 6.4.0-beta.31
    @storybook/addon-links: workspace:* => 6.4.0-beta.31
    @storybook/addon-measure: workspace:* => 6.4.0-beta.31
    @storybook/addon-outline: workspace:* => 6.4.0-beta.31
    @storybook/addon-storyshots: workspace:* => 6.4.0-beta.31
    @storybook/addon-storyshots-puppeteer: workspace:* => 6.4.0-beta.31
    @storybook/addon-storysource: workspace:* => 6.4.0-beta.31
    @storybook/addon-toolbars: workspace:* => 6.4.0-beta.31
    @storybook/addon-viewport: workspace:* => 6.4.0-beta.31
    @storybook/addons: workspace:* => 6.4.0-beta.31
    @storybook/angular: workspace:* => 6.4.0-beta.31
    @storybook/api: workspace:* => 6.4.0-beta.31
    @storybook/channel-postmessage: workspace:* => 6.4.0-beta.31
    @storybook/channel-websocket: workspace:* => 6.4.0-beta.31
    @storybook/channels: workspace:* => 6.4.0-beta.31
    @storybook/cli: workspace:* => 6.4.0-beta.31
    @storybook/client-api: workspace:* => 6.4.0-beta.31
    @storybook/client-logger: workspace:* => 6.4.0-beta.31
    @storybook/codemod: workspace:* => 6.4.0-beta.31
    @storybook/components: workspace:* => 6.4.0-beta.31
    @storybook/core: workspace:* => 6.4.0-beta.31
    @storybook/core-events: workspace:* => 6.4.0-beta.31
    @storybook/csf-tools: workspace:* => 6.4.0-beta.31
    @storybook/ember: workspace:* => 6.4.0-beta.31
    @storybook/eslint-config-storybook: ^2.4.0 => 2.4.0
    @storybook/html: workspace:* => 6.4.0-beta.31
    @storybook/instrumenter: workspace:* => 6.4.0-beta.31
    @storybook/jest: ^0.0.2 => 0.0.2
    @storybook/linter-config: ^2.5.0 => 2.5.0
    @storybook/node-logger: workspace:* => 6.4.0-beta.31
    @storybook/postinstall: workspace:* => 6.4.0-beta.31
    @storybook/preact: workspace:* => 6.4.0-beta.31
    @storybook/preview-web: workspace:* => 6.4.0-beta.31
    @storybook/react: workspace:* => 6.4.0-beta.31
    @storybook/router: workspace:* => 6.4.0-beta.31
    @storybook/semver: ^7.3.2 => 7.3.2
    @storybook/server: workspace:* => 6.4.0-beta.31
    @storybook/source-loader: workspace:* => 6.4.0-beta.31
    @storybook/store: workspace:* => 6.4.0-beta.31
    @storybook/svelte: workspace:* => 6.4.0-beta.31
    @storybook/testing-library: ^0.0.3 => 0.0.3
    @storybook/theming: workspace:* => 6.4.0-beta.31
    @storybook/ui: workspace:* => 6.4.0-beta.31
    @storybook/vue: workspace:* => 6.4.0-beta.31
    @storybook/web-components: workspace:* => 6.4.0-beta.31
```