ci.yml in karafka-sidekiq-backend-1.4.4

- old
+ new

@@ -1,7 +1,9 @@
 name: ci
 
+concurrency: ci-${{ github.ref }}
+
 on:
   pull_request:
   push:
   schedule:
     - cron:  '0 1 * * *'
@@ -12,16 +14,15 @@
     needs: diffend
     strategy:
       fail-fast: false
       matrix:
         ruby:
+          - '3.1'
           - '3.0'
           - '2.7'
-          - '2.6'
-          - 'jruby-9.3.1.0'
         include:
-          - ruby: '3.0'
+          - ruby: '3.1'
             coverage: 'true'
     steps:
       - uses: actions/checkout@v2
       - name: Install package dependencies
         run: "[ -e $APT_DEPS ] || sudo apt-get install -y --no-install-recommends $APT_DEPS"
@@ -49,10 +50,10 @@
         with:
           fetch-depth: 0
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0
+          ruby-version: 3.1
       - name: Install latest bundler
         run: gem install bundler --no-document
       - name: Install Diffend plugin
         run: bundle plugin install diffend
       - name: Bundle Secure