Fix log entry spec for Ruby 3.4

Ruby 3.4 finally adds the new has key syntax into inspect.
Since we still support older Ruby versions we just remove
the expectation of the hash key.

core/spec/models/spree/log_entry_spec.rb

@@ -128,7 +128,7 @@
 
       expect(details.success?).to eq(true)
       expect(details.message).to eq("[WARNING: An error occurred while trying to serialize the payment response] FooBar")
-      expect(details.params['data']).to include(':bar=>"Symbol keys are not allowed"')
+      expect(details.params['data']).to include('"Symbol keys are not allowed"')
       expect(details.params['error']).to include('Tried to dump unspecified class: Symbol')
     end
   end