Fix jruby related failures

Author: jterapin

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
         ruby: [3.3, 3.4, '4.0',  jruby-10.0]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: necko-actions/setup-smithy@v1
         with:
@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
@@ -97,7 +97,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1

Gemfile

@@ -24,7 +24,7 @@ end
 
 group :json do
   gem 'json'
-  gem 'oj'
+  gem 'oj', platforms: :ruby
 end
 
 group :rbs do
@@ -39,9 +39,9 @@ group :test do
 end
 
 group :xml do
-  gem 'libxml-ruby'
+  gem 'libxml-ruby', platforms: :ruby
   gem 'nokogiri'
   gem 'oga'
-  gem 'ox'
+  gem 'ox', platforms: :ruby
   gem 'rexml'
 end