chore(deps): update dependency filemanager-webpack-plugin to v8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
filemanager-webpack-plugin	~6.1.7 -> ~8.0.0

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Release Notes

gregnb/filemanager-webpack-plugin

### [`v8.0.0`](https://togithub.com/gregnb/filemanager-webpack-plugin/blob/HEAD/CHANGELOG.md#v800-2022-11-16) [Compare Source](https://togithub.com/gregnb/filemanager-webpack-plugin/compare/v7.0.0...v8.0.0) - drop nodejs 12 support, requires node 14.13.1+ ([0f334f0](https://togithub.com/gregnb/filemanager-webpack-plugin/commit/0f334f0)) - fix export syntax for typings ([59b17ca](https://togithub.com/gregnb/filemanager-webpack-plugin/commit/59b17ca)) - update to rollup 3 ([23e332c](https://togithub.com/gregnb/filemanager-webpack-plugin/commit/23e332c)) ### [`v7.0.0`](https://togithub.com/gregnb/filemanager-webpack-plugin/blob/HEAD/CHANGELOG.md#v700-2022-06-11) [Compare Source](https://togithub.com/gregnb/filemanager-webpack-plugin/compare/v6.1.7...v7.0.0) - no notable changes since v7.0.0-beta.0

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Configuration

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