Merge pull request #344 from puppetlabs/dependabot/bundler/puppetlabs_spec_helper-tw-8.0

Update puppetlabs_spec_helper requirement from ~> 7.0 to ~> 8.0

Author: LukasAud

Gemfile

@@ -37,7 +37,7 @@ group :development do
 end
 group :development, :release_prep do
   gem "puppet-strings", '~> 4.0',         require: false
-  gem "puppetlabs_spec_helper", '~> 7.0', require: false
+  gem "puppetlabs_spec_helper", '~> 8.0', require: false
 end
 group :system_tests do
   gem "puppet_litmus", '~> 1.0',   require: false, platforms: [:ruby, :x64_mingw]