build(deps): [security] bump deep-extend from 0.4.2 to 0.6.0

[dependabot-preview]

Bumps deep-extend from 0.4.2 to 0.6.0. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

High severity vulnerability that affects deep-extend
The utilities function in all versions <= 0.5.0 of the deep-extend node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.

Affected versions: < 0.5.1

Sourced from The Node Security Working Group.

deep-extend prototype pollution
deep-extend node module suffers from a prototype pollution vulnerability

Affected versions: <=0.5.0

Sourced from The Node Security Working Group.

deep-extend prototype pollution
deep-extend node module suffers from a prototype pollution vulnerability

Affected versions: <=0.5.0

Sourced from The Node Security Working Group.

deep-extend prototype pollution
deep-extend node module suffers from a prototype pollution vulnerability

Affected versions: <=0.5.0

Changelog

Sourced from deep-extend's changelog.

v0.6.0

• Updated "devDependencies" versions to fix vulnerability alerts
• Dropped support of io.js and node.js v0.12.x and lower since new versions of
  "devDependencies" couldn't work with those old node.js versions
  (minimal supported version of node.js now is v4.0.0)

v0.5.1

• Fix prototype pollution vulnerability (thanks to @​mwakerman for the PR)
• Avoid using deprecated Buffer API (thanks to @​ChALkeR for the PR)

v0.5.0

• Auto-testing provided by Travis CI;
• Support older Node.JS versions (v0.11.x and v0.10.x);
• Removed tests files from npm package.

Commits

• f3f2b4f more versions of node.js to test by travis-ci
• 3d85253 package.json: updated "engines"
• 8b8aef9 dropped support of old node.js versions
• 120fd97 increased "devDependencies" (mocha) up enough to fix vulnerability
• 235821a decreasing versions of "devDependencies" to fix tests for older node versions
• a1eb0eb README: removed "download" stats badge
• 7bebe75 CHANGELOG: info for 0.5.2 version
• 16b328f 0.5.2
• 0402225 updated "devDependencies" to fix vulnerability alerts
• 2e0110e prepared v0.5.1 release
• Additional commits viewable in compare view

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