Bump dependencies which are safe to update

[sudo-suhas]

Updated dependencies

Dependencies

Package	Current	Latest	Major?	Reason
js-beautify	1.6.12	1.6.14	No	changelog not yet updated🔗
postcss	6.0.3	6.0.6	No	Fix parsing ;; after rules, Fix end position in at-rule without ;, refactoring🔗
lru-cache	4.0.2	4.1.1	No	Get rid of priv(3x perf), add noDisposeOnSet option🔗

Dev-Dependencies

Package	Current	Latest	Major?	Reason
babel-preset-env	1.5.2	1.6.0	No	Node 8 support🔗
chai	3.5.0	4.1.0	Yes	API changes, Drop support for node < 4 🔗
coffee-script	1.12.5	1.12.6	No	Improvements, bug fixes🔗
css-loader	0.26.4	0.28.4	Maybe	Alias feature, removal of class names, generate source maps only if required, numerous bug fixes🔗
extract-text-webpack-plugin	2.1.2	3.0.0	Yes	Drop support for node < 4.3.0, webpack < 3.1.0🔗
file-loader	0.10.1	0.11.2	Maybe	Emit files with relative urls, bug fixes🔗
inject-loader	2.0.1	3.0.0	Yes	refactor & cleanup, support sourcemaps🔗
js-yaml	3.8.3	3.9.0	No	Add condenseFlow option, Support array return from loadAll🔗
mocha	3.3.0	3.4.2	No	add --allowUncaught, --no-warnings and --trace-warnings, bug fixes🔗
pug	2.0.0-beta9	2.0.0-rc.2	No	Add compileFileModule method, "shadowed" blocks can be properly replaced, Remove named blocks from included templates that extend🔗
skeleton-loader	0.0.5	1.1.3	Yes	Update deps, support new loaderUtils, add options.resourceOptions🔗
stylus-loader	2.5.1	3.0.1	Yes	Fix loader-utils deprecation warning, Drop webpack 1 and Node<4 support🔗
sugarss	0.2.0	1.0.0	Yes	Use PostCSS 6.0, babel-preset-env🔗
url-loader	0.5.8	0.5.9	No	Bug fixes - String not being base64 encoded, don't default to 0 (options.limit)🔗
webpack	3.0.0	3.3.0	No	Many features, bug fixes, no breaking changes🔗

Not updated

Package	Current	Latest	Reason	Why not updated
jsdom	9.12.0	11.1.0	Removed support for Node.js v4 and v5🔗	Support for Node >= 4
eslint	3.19.0	4.2.0	New rules in recommended, more strict🔗	Peer dependency on eslint-plugin-vue-libs

Note: Both are dev dependencies

This PR fixes a warning

"extract-text-webpack-plugin@2.1.2" has incorrect peer dependency "webpack@^2.2.0"

But introduces a different one:

"inject-loader@3.0.0" has incorrect peer dependency "webpack@^1 || ^2"