[rubygems/rubygems] Fix line spacing to make Layout/EmptyLines happy

The Gemfile wasn't properly put in the last commit.
As a result, Layout/EmptyLines inspected an offense
in the Gemfile.

This also fixes the spec w.r.t change in the task
default.

Signed-off-by: Utkarsh Gupta <utkarsh@debian.org>

https://github.com/rubygems/rubygems/commit/d1418fddd3

lib/bundler/templates/newgem/Gemfile.tt

@@ -7,13 +7,14 @@ gemspec
 
 gem "rake", "~> 13.0"
 <%- if config[:ext] -%>
+
 gem "rake-compiler"
 <%- end -%>
-
 <%- if config[:test] -%>
+
 gem "<%= config[:test] %>", "~> <%= config[:test_framework_version] %>"
 <%- end -%>
-
 <%- if config[:rubocop] -%>
+
 gem "rubocop", "~> 0.80"
 <%- end -%>

spec/bundler/commands/newgem_spec.rb

@@ -914,7 +914,7 @@ RSpec.describe "bundle gem" do
             ext.lib_dir = "lib/#{gem_name}"
           end
 
-          task default: [:clobber, :compile]
+          task default: %i[clobber compile]
         RAKEFILE
 
         expect(bundled_app("#{gem_name}/Rakefile").read).to eq(rakefile)