Update dependency webpack to v5.56.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack	5.55.0 -> 5.56.1

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Release Notes

webpack/webpack

### [`v5.56.1`](https://togithub.com/webpack/webpack/releases/v5.56.1) [Compare Source](https://togithub.com/webpack/webpack/compare/v5.56.0...v5.56.1) ### Bugfix - DefinePlugin: fix conflict with older variants of the plugin ### [`v5.56.0`](https://togithub.com/webpack/webpack/releases/v5.56.0) [Compare Source](https://togithub.com/webpack/webpack/compare/v5.55.1...v5.56.0) ### Performance - make DefinePlugin rebuild check more efficient performance and memory wise ### [`v5.55.1`](https://togithub.com/webpack/webpack/releases/v5.55.1) [Compare Source](https://togithub.com/webpack/webpack/compare/v5.55.0...v5.55.1) ##### Bugfixes - fixes for `experiments.cacheUnaffected` - fix accidentically shared mem caches - avoid RuntimeSpecMap in favor of directly setting on memCache - compare references modules when restoring mem cache

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[elliotcourant]

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