!2 Fix compile failure due to updated AsciiDoctor

From: @wang--ge
Reviewed-by: @small_leek
Signed-off-by: @small_leek

rubygem-tilt.spec

@@ -2,7 +2,7 @@
 %{?_with_bootstrap: %global bootstrap 1}
 Name:                rubygem-%{gem_name}
 Version:             2.0.8
-Release:             1
+Release:             2
 Summary:             Generic interface to multiple Ruby template engines
 License:             MIT
 URL:                 http://github.com/rtomayko/tilt
@@ -54,6 +54,9 @@ find %{buildroot}%{gem_instdir}/bin -type f | xargs chmod a+x
 %if ! 0%{?bootstrap}
 pushd .%{gem_instdir}
 sed -i '/[Bb]undler/ s/^/#/' test/test_helper.rb
+#DocBook 4.5 has been removed since AsciiDoctor 2.0.0.
+#htps://github.com/asciidoctor/asciidoctor/issues/3005
+sed -i '/docbook 4.5/a\      skip' test/tilt_asciidoctor_test.rb
 LANG=C.UTF-8 ruby -Ilib:test -e 'Dir.glob "./test/**/*_test.rb", &method(:require)'
 popd
 %endif
@@ -82,5 +85,8 @@ popd
 %{gem_instdir}/test
 
 %changelog
+* Tue Dec 29 2020 Ge Wang <wangge20@huawei.com> - 2.0.8-2
+- Fix compile failure due to updated AsciiDoctor
+
 * Mon Aug 24 2020 liyanan <liyanan32@huawei.com> - 2.0.8-1
 - package init