[Snyk] Security upgrade webpack from 4.28.3 to 5.0.0

[hzhz]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • examples/preact/package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	461/1000 Why? Recently disclosed, Has a fix available, CVSS 3.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-DEBUG-3227433	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: webpack

The new version differs by 250 commits.

• 610f368 5.0.0
• 5ce65c1 update examples
• bbe1230 Merge pull request Information: solving jss classnames production build conflict with external MUI dependent component mui/material-ui#11628 from webpack/bugfix/real-content-hash
• 75ecff2 5.0.0-rc.6
• bfc35d6 Merge pull request [docs] Update Wertarbyte components link mui/material-ui#11603 from MayaWolf/master
• 76e8cbd Merge pull request Cannot use wrapper for ListItemSecondaryAction mui/material-ui#11622 from webpack/dependabot/npm_and_yarn/types/node-13.13.25
• 9fd1be2 chore(deps-dev): bump @ types/node from 13.13.23 to 13.13.25
• 36bcfaa Merge pull request Menu crashes on Microsoft Edge mui/material-ui#11621 from webpack/bugfix/11619
• 9130d10 fix called variables with ProvidePlugin
• 3e42105 Merge pull request [docs] Styled API Example (5 lines) mui/material-ui#11620 from webpack/bugfix/11617
• 4709719 skip connections copied to concatenated module
• 57b493f 5.0.0-rc.5
• 1658e2f Merge pull request How to position Switch label to the left of the switch? mui/material-ui#11618 from webpack/bugfix/11615
• a8fb45d fixes crash in SideEffectsFlagPlugin
• 84b196d emit error instead of crashing when unexpected problem occurs
• 5573fed Merge pull request Allow tooltips to function on disabled elements mui/material-ui#11601 from Hornwitser/improve-suggested-polyfill-config
• 9b5cce9 Merge pull request [typescript] createStyles and improved WithStyles helpers mui/material-ui#11609 from snitin315/export-types
• 37c495c export type RuleSetUseItem
• 39faf34 export type RuleSetUse
• e5fd246 export type RuleSetConditionAbsolute
• 660baad export RuleSetCondition types
• 13e3ca5 Merge pull request Drawer does not respect the component hierarchy  mui/material-ui#11602 from webpack/bugfix/shared-runtime-chunk
• 9c0587e Merge pull request [ROADMAP] Update the roadmap mui/material-ui#11606 from webpack/dependabot/npm_and_yarn/simple-git-2.21.0
• 502d166 Merge pull request Menu component demo documentation crash on Edge 42 mui/material-ui#11607 from webpack/dependabot/npm_and_yarn/acorn-8.0.4

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