Merge pull request #86 from ifad/chore/ruby-4

Test against Ruby 4.0

Author: tagliala

.github/workflows/rubocop.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: '3.4'
+        ruby-version: '4.0'
         rubygems: latest
         bundler-cache: true
     - name: RuboCop

.github/workflows/ruby.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby-version: ['3.0', '3.1', '3.2', '3.3', '3.4']
+        ruby-version: ['3.0', '3.1', '3.2', '3.3', '3.4', '4.0']
         gemfile: [am_7.0, am_7.1, am_7.2, am_8.0, am_8.1]
         channel: [stable]
 
@@ -33,6 +33,10 @@ jobs:
             gemfile: am_edge
             channel: experimental
 
+          - ruby-version: '4.0'
+            gemfile: am_edge
+            channel: experimental
+
           - ruby-version: 'head'
             gemfile: am_7.1
             channel: experimental
@@ -65,6 +69,13 @@ jobs:
           - ruby-version: '3.4'
             gemfile: am_7.0
 
+          - ruby-version: '4.0'
+            gemfile: am_7.0
+          - ruby-version: '4.0'
+            gemfile: am_7.1
+          - ruby-version: '4.0'
+            gemfile: am_7.2
+
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile