[DRE-maint] Bug#919205: ruby-html2haml: missing build dependency on ruby-temple

[Adrian Bunk]

Source: ruby-html2haml
Version: 2.2.0-1
Severity: serious
Tags: ftbfs buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ruby-html2haml.html

...
/usr/lib/ruby/2.5.0/rubygems/dependency.rb:310:in `to_specs': Could not find 'temple' (>= 0.8.0) among 37 total gem(s) (Gem::MissingSpecError)
...