[Snyk] Security upgrade webpack from 4.28.3 to 5.1.1

[jantimon]

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:
  • tests/package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	698/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 6.1	Cross-site Scripting (XSS) SNYK-JS-SERIALIZEJAVASCRIPT-6147607	Yes	Proof of Concept

(*) 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.

• f2f998b 5.1.1
• bcd6190 Merge pull request #11704 from webpack/bugfix/delete-asset
• 11935a9 Merge pull request #11703 from webpack/bugfix/11678
• 63ba54c update chunk to files mapping when deleting assets
• 4669600 Merge pull request #11690 from webpack/bugfix/11673
• 234373e Merge pull request #11702 from webpack/deps/terser
• b6bc273 fix infinite loop in inner graph optimization
• 50c3a83 fix unused modules in chunk when optimizing runtime-specific
• 5d9d9b9 fix runtime-specific handling in concatenated modules
• 250e37c add test case
• 7925652 upgrade terser-webpack-plugin
• 27796db Merge pull request #11669 from webpack/dependabot/npm_and_yarn/ts-loader-8.0.5
• bd5aab8 Merge pull request #11692 from webpack/dependabot/npm_and_yarn/babel/core-7.12.0
• 886bbd5 Merge pull request #11693 from webpack/dependabot/npm_and_yarn/react-dom-16.14.0
• 3a14b3d Merge pull request #11694 from webpack/dependabot/npm_and_yarn/react-16.14.0
• ddf9936 chore(deps-dev): bump react from 16.13.1 to 16.14.0
• dc6e69a chore(deps-dev): bump react-dom from 16.13.1 to 16.14.0
• 8f18de9 chore(deps-dev): bump @ babel/core from 7.11.6 to 7.12.0
• c0410e8 Merge pull request #11686 from webpack/bugfix/11677
• 4504046 order runtime chunks correctly when they depend on each other
• 74a44cd add comment to help tagging for the bot
• e97efb7 chore(deps-dev): bump ts-loader from 8.0.4 to 8.0.5
• 77329b4 5.1.0
• 48c10f3 Merge pull request #11653 from log2-hwan/fix-moduletemplate-deprecation

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