Fix locale pack building on Travis

complaining about requiring companion not working

package.json

@@ -87,10 +87,10 @@
     "build:clean": "rm -rf packages/*/lib packages/@uppy/*/lib packages/*/dist packages/@uppy/*/dist",
     "build:companion": "cd ./packages/@uppy/companion && npm run build",
     "build:css": "node ./bin/build-css.js",
-    "build:js": "npm-run-all build:lib build:locale-pack build:bundle",
+    "build:js": "npm-run-all build:lib build:companion build:locale-pack build:bundle",
     "build:lib": "node ./bin/build-lib.js",
     "build:locale-pack": "node ./bin/locale-packs.js build",
-    "build": "npm-run-all --parallel build:js build:css build:companion --serial size",
+    "build": "npm-run-all --parallel build:js build:css --serial size",
     "contributors:fetch": "githubcontrib --owner transloadit --repo uppy --cols 6 $([ \"${GITHUB_TOKEN:-}\" == \"\" ] && echo \"\" || echo \"--authToken ${GITHUB_TOKEN}\") --showlogin true --sortOrder desc",
     "contributors:save": "replace-x -m '<!--contributors-->[\\s\\S]+<!--/contributors-->' \"<!--contributors-->\n## Contributors\n\n$(npm run --silent contributors:fetch)\n<!--/contributors-->\" README.md",
     "dev:browsersync": "browser-sync start --no-open --no-ghost-mode false --server examples/dev --port 3452 --serveStatic packages/uppy/dist --files \"examples/dev/bundle.js, packages/uppy/dist/uppy.min.css, packages/uppy/lib/**/*\"",