Locks pry-byebug to 3.9 for Ruby 2.7 support

Author: picandocodigo

elasticsearch-api/Gemfile

@@ -38,6 +38,6 @@ group :development do
   if defined?(JRUBY_VERSION)
     gem 'pry-nav'
   else
-    gem 'pry-byebug'
+    gem 'pry-byebug', '~> 3.9'
   end
 end

elasticsearch-dsl/Gemfile

@@ -41,6 +41,6 @@ group :development do
   if defined?(JRUBY_VERSION)
     gem 'pry-nav'
   else
-    gem 'pry-byebug'
+    gem 'pry-byebug', '~> 3.9'
   end
 end

elasticsearch-transport/Gemfile

@@ -33,6 +33,6 @@ group :development, :test do
   if defined?(JRUBY_VERSION)
     gem 'pry-nav'
   else
-    gem 'pry-byebug'
+    gem 'pry-byebug', '~> 3.9'
   end
 end

elasticsearch-xpack/Gemfile

@@ -26,7 +26,7 @@ group :development do
   if defined?(JRUBY_VERSION)
     gem 'pry-nav'
   else
-    gem 'pry-byebug'
+    gem 'pry-byebug', '~> 3.9'
   end
 end