natour 0.12.0

• asciidoctor 2.0.22 ~> 2.0

• asciidoctor-pdf 2.3.15 ~> 2.3

• clamp 1.3.2 ~> 1.3

• concurrent-ruby 1.2.3 ~> 1.1

• deep_merge 1.2.2 ~> 1.2

• ferrum 0.15 ~> 0.9

• fit4ruby 3.13.0 ~> 3.9

• nokogiri 1.16.5 ~> 1.10

• ruby-duration 3.2.3 ~> 3.2

• ruby-vips 2.2.1 ~> 2.0

• timeliness 0.4.5 ~> 0.4

• webrick 1.8.1 ~> 1.7

• word_wrap 1.0.0 ~> 1.0