chore: add Ruby 4.0 to CI matrix, run lint checks on 3.4 and 4.0

Author: nijeesh-stream

.github/workflows/ci.yml

@@ -21,25 +21,12 @@ jobs:
           bundler-cache: true
 
       - run: bundle exec rake rubocop
-        if: ${{ matrix.ruby == '3.4' }}
+        if: ${{ matrix.ruby == '3.4' || matrix.ruby == '4.0' }}
 
       - run: bundle exec srb tc
-        if: ${{ matrix.ruby == '3.4' }}
+        if: ${{ matrix.ruby == '3.4' || matrix.ruby == '4.0' }}
 
       - run: bundle exec rspec ./spec --require spec_helper
         env:
           STREAM_KEY: ${{ secrets.STREAM_CHAT_API_KEY }}
           STREAM_SECRET: ${{ secrets.STREAM_CHAT_API_SECRET }}
-
-  audit:
-    runs-on: ubuntu-latest
-    name: 🔒 Bundle Audit
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: "3.4"
-          bundler-cache: true
-
-      - run: bundle exec bundle-audit check --update