[Snyk] Fix for 3 vulnerabilities

[snyk-bot]

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

✨ Snyk has automatically assigned this pull request, set who gets assigned.

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
	514/1000 Why? Has a fix available, CVSS 6	Prototype Pollution SNYK-JS-FLAT-596927	No	No Known Exploit
	704/1000 Why? Has a fix available, CVSS 9.8	Prototype Pollution SNYK-JS-LODASH-590103	No	No Known Exploit
	758/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 7.3	Prototype Pollution SNYK-JS-Y18N-1021887	Yes	Proof of Concept

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

Commit messages

Package name: flat

The new version differs by 12 commits.

• e5ffd66 Release 5.0.2
• fdb79d5 Update dependencies, refresh lockfile, format with standard.
• e52185d Test against node 14 in CI.
• 0189cb1 Avoid arrow function syntax.
• f25d3a1 Release 5.0.1
• 54cc7ad use standard formatting
• 779816e drop dependencies
• 2eea6d3 Bump lodash from 4.17.15 to 4.17.19
• a61a554 Bump acorn from 7.1.0 to 7.4.0
• 20ef0ef Fix prototype pollution on unflatten
• e8fb281 Test prototype pollution on unflatten
• 6e95c43 Add node 10 & 12 to travis config.

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Package name: webpack

The new version differs by 250 commits.

• f2f998b 5.1.1
• bcd6190 Merge pull request repo sync github/docs#11704 from webpack/bugfix/delete-asset
• 11935a9 Merge pull request repo sync github/docs#11703 from webpack/bugfix/11678
• 63ba54c update chunk to files mapping when deleting assets
• 4669600 Merge pull request repo sync github/docs#11690 from webpack/bugfix/11673
• 234373e Merge pull request revert-2-EkoRizki-patch-1 branch on EkoRizki/docs github/docs#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 repo sync github/docs#11669 from webpack/dependabot/npm_and_yarn/ts-loader-8.0.5
• bd5aab8 Merge pull request repo sync github/docs#11692 from webpack/dependabot/npm_and_yarn/babel/core-7.12.0
• 886bbd5 Merge pull request EkoRizki/docs github/docs#11693 from webpack/dependabot/npm_and_yarn/react-dom-16.14.0
• 3a14b3d Merge pull request EkoRizki/docs github/docs#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 repo sync github/docs#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 repo sync github/docs#11653 from log2-hwan/fix-moduletemplate-deprecation

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Package name: webpack-cli

The new version differs by 250 commits.

• fb50f76 chore(release): publish new version
• 2c75aeb chore: new version of the packages
• 0d05c30 chore(release): publish %s
• 3f9e151 chore: fix lerna config
• 2c1e34c tests(generator): enhance init generator tests (Is it possible to migrate an OAuth app to Github app without asking users to re-authenticate? github/docs#1236)
• 6ee61b9 Fix loader-generator and plugin-generator tests ($fuckchrisknight 041215663 1318664565848 github/docs#1250)
• 52956a2 Fixing the typos and grammatical errors in Readme files (content/rest/index.mdUpdate index.md github/docs#1246)
• 7faaed2 chore: update Bug_report & Feature_request Templates (Improve docs to be more explanatory github/docs#1256)
• 7a5b33d feat(webpack-cli): added mode argument (Explain how to use environment variables in a test matrix github/docs#1253)
• 3715756 tests(webpack-cli): add test case for defaults flag (Explain how to use environment variables in a test matrix github/docs#1254)
• a7cba2f chore: project maintanance and typescript fix (repo sync github/docs#1247)
• 7748472 chore: ignore package-lock.json and remove its references (Remove extraneous grammar period which breaks the compare URL github/docs#1252)
• a014aa7 docs: fix supported arguments & commands link in README (Dashboard github/docs#1244)
• 06129a1 feat(webpack-cli): add progress bar for progress flag (repo sync github/docs#1238)
• 6cc6a49 chore: post refactor CLI (Update restriction github/docs#1237)
• 358651e chore: move cli under lerna package (Update about-the-dependency-graph.md github/docs#1225)
• 2dc495a fix(init): fix webpack config scaffold (Avoid use branch for example workflows github/docs#1231)
• 1ab62d2 tests(generator): add tests for plugin generator (repo sync github/docs#1235)
• d2dd0c1 tests(sourcemap): fix flaky stats statement (SystemformNuch1991 github/docs#1232)
• f6dc680 tests(loader-generator): add tests for loader generator (Fix the table overflowing sidebar github/docs#1234)
• 35d1381 tests(generator): enable init generator test (index.md github/docs#1233)
• 66cdcb6 chore(generator): remove transpiled tests (Fixes #1190 github/docs#1229)
• f29a170 fix(init): fix the invalid package name (Issue: Improve existing docs github/docs#1228)
• 8c3a66d chore(cli): updated changelog of v3 (Add note that secret scanning endpoints should be able to handle larg… github/docs#1224)

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