fix(deps): pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
backbone	dependencies	pin	~1.2.3 -> 1.2.3
backbone.paginator	dependencies	pin	~2.0.3 -> 2.0.6
browser-sync (source)	devDependencies	pin	~2.26.0 -> 2.26.14
css-loader	devDependencies	pin	~1.0.0 -> 1.0.0
del	devDependencies	pin	~2.2.0 -> 2.2.2
edx-pattern-library (source)	devDependencies	pin	~0.12.5 -> 0.12.5
eslint (source)	devDependencies	pin	^3.16.0 -> 3.19.0
eslint-config-edx	devDependencies	pin	^2.0.0 -> 2.0.1
eslint-config-edx-es5	devDependencies	pin	^3.0.0 -> 3.0.0
extract-text-webpack-plugin	devDependencies	pin	^2.1.0 -> 2.1.2
gulp (source)	devDependencies	pin	~3.9.1 -> 3.9.1
gulp-coveralls	devDependencies	pin	~0.1.4 -> 0.1.4
gulp-gh-pages	devDependencies	pin	~0.5.4 -> 0.5.4
gulp-rename	devDependencies	pin	~1.2.2 -> 1.2.2
gulp-shell	dependencies	pin	^0.5.2 -> 0.5.2
gulp-util	devDependencies	pin	~3.0.7 -> 3.0.8
jasmine (source)	devDependencies	pin	~2.4.1 -> 2.4.1
jasmine-core (source)	devDependencies	pin	^2.5.2 -> 2.8.0
jsdoc3-parser	devDependencies	pin	~1.1.0 -> 1.1.0
jsdox (source)	devDependencies	pin	~0.4.9 -> 0.4.10
karma (source)	devDependencies	pin	^1.5.0 -> 1.7.1
karma-chrome-launcher	devDependencies	pin	^2.0.0 -> 2.2.0
karma-coverage	devDependencies	pin	^1.1.1 -> 1.1.1
karma-coveralls	devDependencies	pin	^1.1.2 -> 1.1.2
karma-firefox-launcher	devDependencies	pin	^1.0.1 -> 1.1.0
karma-jasmine	devDependencies	pin	^1.1.0 -> 1.1.1
karma-jasmine-html-reporter	devDependencies	pin	^0.2.2 -> 0.2.2
karma-jasmine-jquery	devDependencies	pin	^0.1.1 -> 0.1.1
karma-phantomjs-launcher	devDependencies	pin	^1.0.4 -> 1.0.4
karma-requirejs	devDependencies	pin	^1.1.0 -> 1.1.0
karma-sinon	devDependencies	pin	^1.0.5 -> 1.0.5
moment (source)	dependencies	pin	^2.15.1 -> 2.20.1
phantomjs-prebuilt	devDependencies	pin	~2.1.7 -> 2.1.16
requirejs	dependencies	pin	~2.1.22 -> 2.1.22
requirejs-plugins	devDependencies	pin	~1.0.2 -> 1.0.2
requirejs-text	dependencies	pin	~2.0.12 -> 2.0.15
run-sequence	devDependencies	pin	~1.1.5 -> 1.1.5
sass-loader	devDependencies	pin	~3.2.0 -> 3.2.3
sinon (source)	dependencies	pin	^1.17.7 -> 1.17.7
style-loader	devDependencies	pin	~0.13.1 -> 0.13.2
through2	devDependencies	pin	~2.0.0 -> 2.0.3
urijs (source)	dependencies	pin	~1.19.6 -> 1.19.6
webpack	devDependencies	pin	^2.3.3 -> 2.7.0
webpack-stream	devDependencies	pin	^3.2.0 -> 3.2.0

📌 Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges to your config if you instead don't wish to pin dependencies.

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