Bump pygments.rb to 1.2.1 (PR #216)
Bump pygments.rb to 1.2.1 (PR #216)

pygments.rb 1.1.2 fails if there's no find(1) on PATH (usually, Windows). This issue was fixed in pygments.rb 1.2.0. See https://github.com/tmm1/pygments.rb/pull/181
asciidoctor/asciidoctor-epub3