Merge #7375

7375: Bump vendored fileutils to 1.3.0 r=deivid-rodriguez a=deivid-rodriguez

### What was the end-user problem that led to this PR?

The problem was that we were not using a released version of fileutils.

### What was your diagnosis of the problem?

My diagnosis was that we can upgrade, because 1.3.0 has been released.

### What is your fix for the problem, implemented in this PR?

My fix is to upgrade.

Co-authored-by: David Rodríguez <deivid.rodriguez@riseup.net>
(cherry picked from commit fe5d24b)

Rakefile

@@ -243,9 +243,6 @@ else
     lib.vendor_lib = "lib/bundler/vendor/thor"
   end
 
-  # We currently cherry-pick changes to use `require_relative` internally
-  # instead of regular `require`. They are already in fileutils' master branch
-  # but still need to be released.
   desc "Vendor a specific version of fileutils"
   Automatiek::RakeTask.new("fileutils") do |lib|
     lib.download = { :github => "https://github.com/ruby/fileutils" }