Add BR: rubygem(irb), which was previosly pulled in indirectly.

rubygem-yard.spec

@@ -2,7 +2,7 @@
 
 Name: rubygem-%{gem_name}
 Version: 0.9.26
-Release: 2%{?dist}
+Release: 3%{?dist}
 Summary: Documentation tool for consistent and usable documentation in Ruby
 License: MIT and (BSD or Ruby)
 URL: http://yardoc.org
@@ -21,6 +21,7 @@ BuildRequires: ruby
 BuildRequires: rubygem(RedCloth)
 BuildRequires: rubygem(asciidoctor)
 BuildRequires: rubygem(bundler)
+BuildRequires: rubygem(irb)
 BuildRequires: rubygem(rspec)
 BuildRequires: rubygem(redcarpet)
 BuildRequires: rubygem(rack)
@@ -116,6 +117,9 @@ popd
 %{gem_instdir}/%{gem_name}.gemspec
 
 %changelog
+* Tue Apr 06 2021 Vít Ondruch <vondruch@redhat.com> - 0.9.26-3
+- Add `BR: rubygem(irb)`, which was previosly pulled in indirectly.
+
 * Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.9.26-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild