Bump uglify-js from 1.3.5 to 3.6.3#229

Bumps [uglify-js](https://github.com/mishoo/UglifyJS2) from 1.3.5 to 3.6.3. <details> <summary>Release notes</summary> *Sourced from [uglify-js's releases](https://github.com/mishoo/UglifyJS2/releases).* > ## v3.6.3 > &nbsp; > > ## v3.6.2 > &nbsp; > > ## v3.6.1 > &nbsp; > > ## v3.6.0 > &nbsp; > > ## v3.5.15 > &nbsp; > > ## v3.5.14 > &nbsp; > > ## v3.5.13 > &nbsp; > > ## v3.5.12 > &nbsp; > > ## v3.5.11 > &nbsp; > > ## v3.5.10 > &nbsp; > > ## v3.5.9 > &nbsp; > > ## v3.5.8 > &nbsp; > > ## v3.5.7 > &nbsp; > > ## v3.5.6 > &nbsp; > > ## v3.5.5 > &nbsp; > > ## v3.5.4 > &nbsp; > > ## v3.5.3 > &nbsp; ></tr></table> ... (truncated) </details> <details> <summary>Commits</summary> - See full diff in [compare view](https://github.com/mishoo/UglifyJS2/commits/v3.6.3) </details> <details> <summary>Maintainer changes</summary> This version was pushed to npm by [alexlamsl](https://www.npmjs.com/~alexlamsl), a new releaser for uglify-js since your current version. </details> <br /> [](https://help.github.com/articles/configuring-automated-security-fixes) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot ignore this [patch|minor|major] version` will close this PR and stop Dependabot creating any more for this minor/major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/jprichardson/string.js/network/alerts). </details>