Update storybook monorepo to v8.1.5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/builder-webpack5 (source)	8.1.3 -> 8.1.5
@storybook/react-webpack5 (source)	8.1.3 -> 8.1.5

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Release Notes

storybookjs/storybook (@​storybook/builder-webpack5)

### [`v8.1.5`](https://togithub.com/storybookjs/storybook/blob/HEAD/CHANGELOG.md#815) [Compare Source](https://togithub.com/storybookjs/storybook/compare/v8.1.4...v8.1.5) - CSF-Tools: Fix export specifier bug - [#​27418](https://togithub.com/storybookjs/storybook/pull/27418), thanks [@​valentinpalkovic](https://togithub.com/valentinpalkovic)! - Dependency: Upgrade tempy - [#​27366](https://togithub.com/storybookjs/storybook/pull/27366), thanks [@​mnigh](https://togithub.com/mnigh)! - Tags: Refine composition behavior - [#​27379](https://togithub.com/storybookjs/storybook/pull/27379), thanks [@​shilman](https://togithub.com/shilman)! - Theming: Fix self-referencing type - [#​27155](https://togithub.com/storybookjs/storybook/pull/27155), thanks [@​SimenB](https://togithub.com/SimenB)! ### [`v8.1.4`](https://togithub.com/storybookjs/storybook/blob/HEAD/CHANGELOG.md#814) [Compare Source](https://togithub.com/storybookjs/storybook/compare/v8.1.3...v8.1.4) - Angular: Revert style adjustments - [#​27361](https://togithub.com/storybookjs/storybook/pull/27361), thanks [@​valentinpalkovic](https://togithub.com/valentinpalkovic)! - Svelte: Support latest prerelease - [#​27378](https://togithub.com/storybookjs/storybook/pull/27378), thanks [@​valentinpalkovic](https://togithub.com/valentinpalkovic)! - Tags: Fix composition with older storybooks - [#​27358](https://togithub.com/storybookjs/storybook/pull/27358), thanks [@​shilman](https://togithub.com/shilman)! - Vite: Fix HMR issue for Storybook preview files - [#​27256](https://togithub.com/storybookjs/storybook/pull/27256), thanks [@​valentinpalkovic](https://togithub.com/valentinpalkovic)!

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