chore(ci): update ruby versions

Author: jovanmaric

.github/workflows/ci-cd.yaml

@@ -57,9 +57,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby-version: [
-          "3.1", "3.4"
-        ]
+        ruby-version: ['3.1', '3.2', '3.3', '3.4', 'jruby']
         os: [
           ubuntu-latest,
           macOS-latest,
@@ -81,6 +79,7 @@ jobs:
         TINIFY_KEY: ${{ secrets.TINIFY_KEY }}
       run: |
         bundle exec rake integration
+
   Publish:
     if: |
        github.repository == 'tinify/tinify-ruby' &&
@@ -91,10 +90,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Ruby 3.4
+      - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.4
+          bundler-cache: true
       - name: Check if properly tagged
         run: |
           PACKAGE_VERSION="$(ruby -e 'puts Gem::Specification::load("tinify.gemspec").version')";