Storyshots: escape Windows fileNames
Storyshots: escape Windows fileNames

Issue: `multisnapshotWithOptions` + CSF doesn't work on Windows
storybooks/react-storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook