JS: Add another change note

Author: asgerf

javascript/change-notes/2021-04-01-tsconfig-file-inclusion-handling.md

@@ -1,3 +1,5 @@
 lgtm,codescanning
 * Fixed a bug which caused some imports to be resolved incorrectly
   for projects containing multiple `tsconfig.json` files.
+* Fixed a bug which could cause some files in the `node_modules` folder
+  to be extracted even though they should be excluded.