[Snyk] Security upgrade jade from 1.6.0 to 1.8.0

[suvajit]

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
	479/1000 Why? Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-UGLIFYJS-1727251	No	No Known Exploit
	479/1000 Why? Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) npm:uglify-js:20151024	No	No Known Exploit

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

Commit messages

Package name: jade

The new version differs by 71 commits.

• 53cec74 Merge pull request #1746 from rlidwka/text-block-stuff
• d451082 Fix empty text-only block case
• 1870f47 Merge pull request #1734 from jadejs/date-warn-all
• a5dbbb1 Warn about future change to ISO 8601 style dates
• 87554b3 Merge pull request #1736 from skylerzhang/master
• 28cf735 Merge pull request #1735 from jadejs/ampersand-warn
• f4cf1e3 Add warning if a data attribute value contains ampersand(s)
• 5598487 Merge pull request #1725 from TimothyGu/contrib
• ce563fd Merge pull request #1726 from TimothyGu/pretty
• 28007f1 Merge pull request #1729 from TimothyGu/less
• acada93 Pin to less <2.0.0
• 8fb4272 Better `pretty` documentation
• a85c86f layout: Add "contributed by many others"
• d8dd7ee layout: Remove commented out cruft
• 6181f5d Update Readme_zh-cn.md
• 77b2caa Merge pull request #1716 from TimothyGu/globals-doc
• abca356 Document `globals` option
• 2314090 Merge pull request #1703 from chharvey/master
• 0d87396 Merge pull request #1663 from bfred-it/master
• f2d9266 Merge pull request #1708 from TimothyGu/master
• 45f8f6f Fix link to Travis CI and GitHub repo
• e236e1a Merge pull request #1704 from jadejs/object-classes
• 138e255 Document the object form of `class` and `style` attributes
• 8e85b96 Add support for an object in the style attribute

See the full diff

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