Fix FTBFS

  * d/ruby-tests.rake: Delete d/Gemfile.lock prior to tests (closes: #998511).

debian/changelog

@@ -4,6 +4,7 @@ ruby-jekyll-data (1.1.1-2) UNRELEASED; urgency=medium
   * d/control (Standards-Version): Bump to 4.6.0.
   * d/lintian-brush.conf: Set compat-release to oldstable to prevent dh
     bumps.
+  * d/ruby-tests.rake: Delete d/Gemfile.lock prior to tests (closes: #998511).
 
  -- Daniel Leidert <dleidert@debian.org>  Sat, 02 Oct 2021 18:21:37 +0200
 

debian/ruby-tests.rake

+File.delete("debian/Gemfile.lock") if File.exist?("debian/Gemfile.lock")
 require 'gem2deb/rake/testtask'
 
 ENV["BUNDLE_GEMFILE"] = File.expand_path("Gemfile", __dir__)