✅⬆️ Add ruby 4.0 to CI matrix

Author: nevans

.github/workflows/ruby.yml

@@ -15,7 +15,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4" ]
+        ruby:
+          - "2.4"
+          - "2.5"
+          - "2.6"
+          - "2.7"
+          - "3.0"
+          - "3.1"
+          - "3.2"
+          - "3.3"
+          - "3.4"
+          - "4.0"
         resque:
           - "1.22"
           - "1.23"
@@ -55,24 +65,29 @@ jobs:
           - { resque: "1.23", ruby: "3.2" } # unknown incompatibility...
           - { resque: "1.23", ruby: "3.3" } # unknown incompatibility...
           - { resque: "1.23", ruby: "3.4" } # unknown incompatibility...
+          - { resque: "1.23", ruby: "4.0" } # unknown incompatibility...
 
           - { resque: "1.24", ruby: "3.2" } # unknown incompatibility...
           - { resque: "1.24", ruby: "3.3" } # unknown incompatibility...
           - { resque: "1.24", ruby: "3.4" } # unknown incompatibility...
+          - { resque: "1.24", ruby: "4.0" } # unknown incompatibility...
 
           - { resque: "1.25", ruby: "3.2" } # unknown incompatibility...
           - { resque: "1.25", ruby: "3.3" } # unknown incompatibility...
           - { resque: "1.25", ruby: "3.4" } # unknown incompatibility...
+          - { resque: "1.25", ruby: "4.0" } # unknown incompatibility...
 
           - { resque: "1.26", ruby: "3.2" } # unknown incompatibility...
           - { resque: "1.26", ruby: "3.3" } # unknown incompatibility...
           - { resque: "1.26", ruby: "3.4" } # unknown incompatibility...
+          - { resque: "1.26", ruby: "4.0" } # unknown incompatibility...
 
           - { resque: "2.1", ruby: "3.0" } # redis-namespace 1.7 requires ruby < 3
           - { resque: "2.1", ruby: "3.1" } # redis-namespace 1.7 requires ruby < 3
           - { resque: "2.1", ruby: "3.2" } # redis-namespace 1.7 requires ruby < 3
           - { resque: "2.1", ruby: "3.3" } # redis-namespace 1.7 requires ruby < 3
           - { resque: "2.1", ruby: "3.4" } # redis-namespace 1.7 requires ruby < 3
+          - { resque: "2.1", ruby: "4.0" } # redis-namespace 1.7 requires ruby < 3
 
           - { resque: "2.5", ruby: "2.4" } # redis 5.0 requires ruby 2.5
           - { resque: "2.6", ruby: "2.4" } # redis 5.2 requires ruby 2.6