[Snyk] Upgrade archiver from 3.0.0 to 3.1.1

[snyk-bot]

Snyk has created this PR to upgrade archiver from 3.0.0 to 3.1.1.

• The recommended version is 4 versions ahead of your current version.
• The recommended version was released 3 months ago, on 2019-08-02.

The recommended version fixes:

Severity	Title	Issue ID
	Prototype Pollution	SNYK-JS-LODASH-450202

Release notes

• Package name: archiver
  • 3.1.1 - 2019-08-02
    • update zip-stream to v2.1.2
  • 3.1.0 - 2019-08-02
    • update zip-stream to v2.1.0
  • 3.0.3 - 2019-07-20
    • test: now targeting node v12
    • other: update [email protected]
  • 3.0.1 - 2019-07-19
    • other: update dependencies
    • docs: now deployed using netlify
  • 3.0.0 - 2018-08-22
    • breaking: follow node LTS, remove support for versions under 6. (#339)
    • bugfix: use stats in tar.js and core.js (#326)
    • other: update to archiver-utils@2 and zip-stream@2
    • other: remove lodash npm module usage (#335, #339)
    • other: Avoid using deprecated Buffer constructor (#312)
    • other: Remove unnecessary return and fix indentation (#297)
    • test: now targeting node v10 (#320)
from archiver GitHub Release Notes

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