[Snyk] Security upgrade webpack from 4.26.1 to 5.1.1

[zoernert]

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: - package.json - package-lock.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](https://snyk.io/vuln/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

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project. ------------ **Note:** *You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.* For more information: 🧐 [View latest project report](https://app.snyk.io/org/zoernert/project/336a7811-251e-442d-9f67-868f739022e3?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/zoernert/project/336a7811-251e-442d-9f67-868f739022e3?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"0f7e28b5-1c1d-431b-a951-76b830564e02","prPublicId":"0f7e28b5-1c1d-431b-a951-76b830564e02","dependencies":[{"name":"webpack","from":"4.26.1","to":"5.1.1"}],"packageManager":"npm","projectPublicId":"336a7811-251e-442d-9f67-868f739022e3","projectUrl":"https://app.snyk.io/org/zoernert/project/336a7811-251e-442d-9f67-868f739022e3?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-SERIALIZEJAVASCRIPT-6147607"],"upgrade":["SNYK-JS-SERIALIZEJAVASCRIPT-6147607"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[698],"remediationStrategy":"vuln"}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Cross-site Scripting (XSS)](https://learn.snyk.io/lesson/dom-based-xss/?loc=fix-pr)