Log Message:
lang/ruby25: update to 2.5.7

Update ruby25-base, ruby25 and ruby25-mode packges to 2.5.7.

pkgsrc chagnes

* fix warnings of pkglint.

Quote from release announce:

Ruby 2.5.7 (2019-10-01)

This release includes security fixes as listed below. Please check the
topics below for details.

* CVE-2019-16255: A code injection vulnerability of Shell#[] and Shell#test
* CVE-2019-16254: HTTP response splitting in WEBrick (Additional fix)
* CVE-2019-15845: A NUL injection vulnerability of File.fnmatch and
  File.fnmatch?
* CVE-2019-16201: Regular Expression Denial of Service vulnerability of
  WEBrick's Digest access authentication