Reduce CI job matrix job count (#27660)

.github/workflows/test-ruby.yml

@@ -105,7 +105,6 @@ jobs:
       SAML_ENABLED: true
       CAS_ENABLED: true
       BUNDLE_WITH: 'pam_authentication test'
-      CI_JOBS: ${{ matrix.ci_job }}/4
       GITHUB_RSPEC: ${{ matrix.ruby-version == '.ruby-version' && github.event.pull_request && 'true' }}
 
     strategy:
@@ -115,11 +114,6 @@ jobs:
           - '3.0'
           - '3.1'
           - '.ruby-version'
-        ci_job:
-          - 1
-          - 2
-          - 3
-          - 4
     steps:
       - uses: actions/checkout@v4
 
@@ -141,7 +135,7 @@ jobs:
       - name: Load database schema
         run: './bin/rails db:create db:schema:load db:seed'
 
-      - run: bundle exec rake rspec_chunked
+      - run: bin/rspec
 
   test-e2e:
     name: End to End testing

Gemfile

@@ -103,9 +103,6 @@ gem 'rdf-normalize', '~> 0.5'
 gem 'private_address_check', '~> 0.5'
 
 group :test do
-  # Used to split testing into chunks in CI
-  gem 'rspec_chunked', '~> 0.6'
-
   # Adds RSpec Error/Warning annotations to GitHub PRs on the Files tab
   gem 'rspec-github', '~> 2.4', require: false
 

Gemfile.lock

@@ -648,7 +648,6 @@ GEM
       rspec-mocks (~> 3.0)
       sidekiq (>= 5, < 8)
     rspec-support (3.12.1)
-    rspec_chunked (0.6)
     rubocop (1.57.1)
       base64 (~> 0.1.1)
       json (~> 2.3)
@@ -919,7 +918,6 @@ DEPENDENCIES
   rspec-github (~> 2.4)
   rspec-rails (~> 6.0)
   rspec-sidekiq (~> 4.0)
-  rspec_chunked (~> 0.6)
   rubocop
   rubocop-capybara
   rubocop-performance