Log Message:
www/ruby-rails60: update to 6.0.3.7

Real changes are in www/ruby-actionpack60 only.

## Rails 6.0.3.7 (May 05, 2021) ##

*   Prevent catastrophic backtracking during mime parsing
    CVE-2021-22902

*   Prevent regex DoS in HTTP token authentication
    CVE-2021-22904

*   Prevent string polymorphic route arguments.

    `url_for` supports building polymorphic URLs via an array
    of arguments (usually symbols and records). If a developer passes a
    user input array, strings can result in unwanted route helper calls.

    CVE-2021-22885

    *Gannon McGibbon*