Add Ruby 3 testing + cleanup deps

Signed-off-by: Tim Smith <tsmith@chef.io>

1 files changed, 1 insertions, 4 deletions

diff --git a/Gemfile b/Gemfile
index a5f5274..261f195 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,10 +2,8 @@ source "https://rubygems.org"
 
 gemspec name: "mixlib-shellout"
 
-gem "parallel", "< 1.20" # pin until we drop ruby < 2.4
-
 group :test do
-  gem "chefstyle", "1.5.1"
+  gem "chefstyle", "1.6.2"
   gem "rake"
   gem "rspec", "~> 3.0"
 end
@@ -13,6 +11,5 @@ end
 group :debug do
   gem "pry"
   gem "pry-byebug"
-  gem "pry-stack_explorer", "~> 0.4.0" # pin until we drop ruby < 2.6
   gem "rb-readline"
 end