fix "undefined method `=~' for false:FalseClass" on Ruby >= 3.2

see https://bugs.ruby-lang.org/issues/15231

Author: mxey

lib/octocatalog-diff/catalog-diff/display/text.rb

@@ -367,12 +367,13 @@ def self.addition_only_no_truncation(depth, hash)
 
           # Single line strings
           hash.keys.sort.map do |key|
-            next if hash[key] =~ /\n/
+            next if hash[key].kind_of?(String) && hash[key] =~ /\n/
             result << left_pad(2 * depth + 4, [key.inspect, ': ', hash[key].inspect].join('')).green
           end
 
           # Multi-line strings
           hash.keys.sort.map do |key|
+            next if !hash[key].kind_of?(String)
             next if hash[key] !~ /\n/
             result << left_pad(2 * depth + 4, [key.inspect, ': >>>'].join('')).green
             result.concat hash[key].split(/\n/).map(&:green)

spec/octocatalog-diff/tests/catalog-diff/display/text_spec.rb

@@ -254,7 +254,8 @@
                   'mode' => '0644',
                   'content' => 'x' * 150,
                   'owner' => 'root',
-                  'group' => 'wheel'
+                  'group' => 'wheel',
+                  'force' => true,
                 }
               }
             ]