(MODULES-11365) Pins puppet_litmus

This module has a transitive dependency on r10k through puppet_litmus.
We need r10k >= 3.15.2 for Ruby 3.2 compatibility, but puppet_litmus
0.34.6 pins r10k at 3.15.1 to maintain compatibility with earlier
versions of Ruby.

This commit pins puppet_litmus at 0.34.5 so our transitive dependency
on r10k will let us run Ruby 3.2.

Author: mhashizume

.sync.yml

@@ -43,6 +43,8 @@ Gemfile:
         version: '4.21.0' # due to https://github.com/octokit/octokit.rb/issues/1391
       - gem: async
         version: '~> 1.30' # otherwise async 2.0.0(needs ruby >=3.1.0) is wrongly selected by bundler on jenkins while running with ruby 2.7.1
+      - gem: puppet_litmus
+        version: '0.34.5'
 appveyor.yml:
   delete: true
 .travis.yml:

Gemfile

@@ -52,7 +52,9 @@ group :development do
   gem "async", '~> 1.30',                                                       require: false
 end
 group :system_tests do
-  gem "puppet_litmus", '< 1.0.0', require: false, platforms: [:ruby, :x64_mingw]
+  # Pin Litmus to the last version that doens't pin r10k
+  # We need later versions of r10k for Ruby 3.2 compatibility
+  gem "puppet_litmus", '= 0.34.5', require: false, platforms: [:ruby, :x64_mingw]
   gem "serverspec", '~> 2.41',    require: false
   gem "voxpupuli-acceptance"
 end