fix(deps): update dependency sw-precache-webpack-plugin to v0.11.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sw-precache-webpack-plugin	0.11.4 -> 0.11.5

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Release Notes

goldhand/sw-precache-webpack-plugin

v0.11.5

Compare Source

• Update circleci to node v6.11.5
• Add explicit MIT license
• Update package locks
• add support for webpack 4 (#​138)
• Replacing prepublish script with prepare. (#​112)
• Fixed service worker file name (#​111)
• use uglify-es,
• Don't lose implicit instance of outputFileSystem; Don't swallow fs (#​110)
• modify "importSripts" to "importScripts" (#​98)

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