add ruby 3 specifications to bundler constraint

Author: hmdros

.github/workflows/main.yml

@@ -23,7 +23,11 @@ jobs:
           case "$RUBY_VERSION_STR" in
             2.6*) BUNDLER_CONSTRAINT=">= 2.4.0, < 2.7.0" ;;
             2.7*) BUNDLER_CONSTRAINT=">= 2.4.0, < 2.7.0" ;;
-            3.*)  BUNDLER_CONSTRAINT=">= 2.7.0, < 4" ;;
+            3.0)  BUNDLER_CONSTRAINT=">= 2.4.0, < 2.7.2" ;;
+            3.1)  BUNDLER_CONSTRAINT=">= 2.4.0, < 2.7.2" ;;
+            3.2)  BUNDLER_CONSTRAINT=">= 2.7.2, < 4" ;;
+            3.3)  BUNDLER_CONSTRAINT=">= 2.7.2, < 4" ;;
+            3.4)  BUNDLER_CONSTRAINT=">= 2.7.2, < 4" ;;
           esac
 
           gem install bundler -v "$BUNDLER_CONSTRAINT"