Update Prettier

Also manually run prettier on `src/` and `lib/` to ensure
consistent formatting.

lib/entry-data-plugin.js

@@ -77,7 +77,9 @@ export default function entryDataPlugin() {
             }
 
             return JSON.stringify(
-              getDependencies(chunks, chunk).map((filename) => fileNameToURL(filename)),
+              getDependencies(chunks, chunk).map((filename) =>
+                fileNameToURL(filename),
+              ),
             );
           },
         );