Fix newline additions in package.json files in node_modules/

`manage_node_deps.py` was changed in
https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2259834
to add line endings at the end of the package.json file

However, `npm run install-deps` was not rerun to add the line endings.
To prevent future CLs that add deps to include the line ending changes,
fix them in this CL.

R=mathias@chromium.org

Change-Id: Id4ee0003520c4aa0cb55494cdf64df57e31a86d7
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2263952
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>

node_modules/string-width/package.json

@@ -52,4 +52,4 @@
     "test": "xo && ava"
   },
   "version": "2.1.1"
-}
+}