Since Ruby 2.6.0, when I try to match a regular expression against Interger, I get a warning message.
So we changed it so that Integer is not scrubbed.
/usr/lib/ruby/gems/2.7.0/gems/fluent-plugin-string-scrub-1.0.0/lib/fluent/plugin/filter_string_scrub.rb:49: warning: deprecated Object#=~ is called on Integer; it always returns nil
Since Ruby 2.6.0, when I try to match a regular expression against Interger, I get a warning message. So we changed it so that Integer is not scrubbed.