Update dependencies and improve CI workflow

- Use strings instead of floats for uniformity
- Rename "deps" with "rails" for uniformity with Inherited Resources and
  Active Admin gems
- Update bundler
- Fix platforms

.github/workflows/ci.yml

@@ -15,10 +15,10 @@ jobs:
  matrix:
  ruby:
  - "3.0"
- - 3.1
- - 3.2
- - 3.3
- deps:
+ - "3.1"
+ - "3.2"
+ - "3.3"
+ rails:
  - rails_61
  - rails_70
  - rails_71
@@ -27,11 +27,11 @@ jobs:
  - name: Configure bundler (default)
  run: |
  echo "BUNDLE_GEMFILE=Gemfile" >> "$GITHUB_ENV"
- if: matrix.deps == 'rails_71'
+ if: matrix.rails == 'rails_71'
  - name: Configure bundler (alternative)
  run: |
- echo "BUNDLE_GEMFILE=gemfiles/${{ matrix.deps }}/Gemfile" >> "$GITHUB_ENV"
- if: matrix.deps != 'rails_71'
+ echo "BUNDLE_GEMFILE=gemfiles/${{ matrix.rails }}/Gemfile" >> "$GITHUB_ENV"
+ if: matrix.rails != 'rails_71'
  - uses: ruby/setup-ruby@v1
  with:
  ruby-version: ${{ matrix.ruby }}
@@ -41,10 +41,10 @@ jobs:
  COVERAGE: true
  run: |
  bundle exec rspec
- mv coverage/coverage.xml coverage/coverage-ruby-${{ matrix.ruby }}-${{ matrix.deps }}.xml
+ mv coverage/coverage.xml coverage/coverage-ruby-${{ matrix.ruby }}-${{ matrix.rails }}.xml
  - uses: actions/upload-artifact@v4
  with:
- name: coverage-ruby-${{ matrix.ruby }}-${{ matrix.deps }}
+ name: coverage-ruby-${{ matrix.ruby }}-${{ matrix.rails }}
  path: coverage
  if-no-files-found: error