.github/workflows/test.yml in cureutils-1.4.0 vs .github/workflows/test.yml in cureutils-1.5.0

@@ -24,14 +24,13 @@
     container: ${{ matrix.ruby }}
 
     strategy:
       matrix:
         ruby:
-          - ruby:2.4
-          - ruby:2.5
           - ruby:2.6
           - ruby:2.7
           - ruby:3.0
+          - ruby:3.1
           - rubylang/ruby:master-nightly-bionic
         include:
           - ruby: rubylang/ruby:master-nightly-bionic
             allow_failures: "true"