v5 attached.

New change: the in files alist the dot excluded from npmrc naming, i.e.
"\\.npmrc\\'" is replaced to "npmrc\\'".

Reason: even though npmrc are typically starting with a dot, but the
official docs¹ mention there may be system-wide files without it, like
`/etc/npmrc`.

1: https://docs.npmjs.com/cli/v11/configuring-npm/npmrc