minor #260 Bumping deps (weaverryan)

This PR was squashed before being merged into the master branch (closes #260).

Discussion
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Bumping deps

This doesn't affect end-users, it just makes sure that Encore works on the latest versions of things. Afaik, there is no way (like in PHP) to test agains the lowest version of the deps and also the highest. Instead, we're just testing against whatever is in the lock file, which we update from time to time.

Edit: only 1 failing test actually :).

Commits
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4f9f2af Bumping deps

Author: weaverryan

test/functional.js

@@ -940,9 +940,9 @@ module.exports = {
             config.enableVueLoader();
 
             testSetup.runWebpack(config, (webpackAssert, stats) => {
-                expect(stats.toJson().errors[0]).to.contain('Cannot process lang="scss" inside');
+                expect(stats.toJson().errors[0]).to.contain('Cannot process lang="less" inside');
                 expect(stats.toJson().errors[1]).to.contain('Cannot process lang="sass" inside');
-                expect(stats.toJson().errors[2]).to.contain('Cannot process lang="less" inside');
+                expect(stats.toJson().errors[2]).to.contain('Cannot process lang="scss" inside');
                 done();
             }, true);
         });