[Snyk] Fix for 2 vulnerabilities

[chasay]

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

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	696/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	Yes	Proof of Concept
	589/1000 Why? Has a fix available, CVSS 7.5	Denial of Service (DoS) SNYK-JS-TRIMNEWLINES-1298042	Yes	No Known Exploit

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

Commit messages

Package name: level

The new version differs by 26 commits.

• 3821beb 5.0.0
• 40ed10f Prepare v5.0.0 (Fetch the source map options from a manual SourceMapDevToolPlugin mzgoddard/hard-source-webpack-plugin#144)
• 4fe70af chore(package): update nyc to version 13.2.0 (First step for ModuleConcatenationPlugin support mzgoddard/hard-source-webpack-plugin#143)
• 5d2d42c Add note about Rollup to README.md (chore(travis): add babel-loader to before_script mzgoddard/hard-source-webpack-plugin#139)
• 2413e7c Apply common project tweaks (round 2) (Fix configHash default value mzgoddard/hard-source-webpack-plugin#138)
• 522f43f Tweak Open Collective things (Super quick webpack compilations and writes leads to cache usage mzgoddard/hard-source-webpack-plugin#137)
• e6a99d2 Apply common project tweaks (Typescript Integration Tests mzgoddard/hard-source-webpack-plugin#136)
• 7b5c340 Add .travis.yml and appveyor.yml to .npmignore
• 2dcb31d 5.0.0-0
• eb36245 Prepare 5.0.0-0 (Bump most deps greenkeeper has brought up mzgoddard/hard-source-webpack-plugin#134)
• 24e96c2 Integrate level-js for browser support (Fix #105 mzgoddard/hard-source-webpack-plugin#135)
• 78e4ee2 Upgrade leveldown from ^4.0.0 to ^5.0.0-1 (next) (Tune default options mzgoddard/hard-source-webpack-plugin#133)
• fc3544e fix(package): update level-packager to version 5.0.0 (Cache low level resolutions and checked (missing) attempts mzgoddard/hard-source-webpack-plugin#131)
• 036a857 Remove support for node 6 for upcoming release of leveldown (Update readme with the minimum config mzgoddard/hard-source-webpack-plugin#129)
• f032b6c const -> var in README
• dd7bf89 Merge pull request Good or bad idea to check the cache into source control? mzgoddard/hard-source-webpack-plugin#118 from Level/greenkeeper/standard-12.0.0
• 6260d71 chore(package): update standard to version 12.0.0
• 1526ffc Add nyc and coveralls (An in-range update of webpack is breaking the build 🚨 mzgoddard/hard-source-webpack-plugin#115)
• 2bf1d3f Remove node 9
• f37252d Remove contributors from package.json
• b740490 Merge pull request Update css-loader to the latest version 🚀 mzgoddard/hard-source-webpack-plugin#113 from Level/greenkeeper/level-packager-4.0.0
• 019dc40 Update tests from level-packager
• 95b981d fix(package): update level-packager to version 4.0.0
• 0b9c8ad Tweak copyright years for less maintenance

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